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126253 = 251503
BaseRepresentation
bin11110110100101101
320102012001
4132310231
513020003
62412301
71034041
oct366455
9212161
10126253
1186946
1261091
134560a
1434021
152761d
hex1ed2d

126253 has 4 divisors (see below), whose sum is σ = 127008. Its totient is φ = 125500.

The previous prime is 126241. The next prime is 126257. The reversal of 126253 is 352621.

It is a happy number.

126253 is a nontrivial binomial coefficient, being equal to C(503, 2).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 126253 - 213 = 118061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 502.

It is an arithmetic number, because the mean of its divisors is an integer number (31752).

2126253 is an apocalyptic number.

126253 is the 502-nd triangular number.

126253 is the 168-th centered nonagonal number.

It is an amenable number.

126253 is a deficient number, since it is larger than the sum of its proper divisors (755).

126253 is an equidigital number, since it uses as much as digits as its factorization.

126253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754.

The product of its digits is 360, while the sum is 19.

The square root of 126253 is about 355.3209816490. The cubic root of 126253 is about 50.1665115293.

Adding to 126253 its reverse (352621), we get a palindrome (478874).

It can be divided in two parts, 126 and 253, that multiplied together give a triangular number (31878 = T252).

The spelling of 126253 in words is "one hundred twenty-six thousand, two hundred fifty-three".

Divisors: 1 251 503 126253