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123224201 = 132193281
BaseRepresentation
bin1110101100001…
…00000010001001
322120212102211022
413112010002021
5223021133301
620121042225
73024250142
oct726040211
9276772738
10123224201
1163614191
1235326375
131c6b5639
1412518ac9
15ac40d1b
hex7584089

123224201 has 4 divisors (see below), whose sum is σ = 123318804. Its totient is φ = 123129600.

The previous prime is 123224191. The next prime is 123224243. The reversal of 123224201 is 102422321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102422321 = 373327437.

It can be written as a sum of positive squares in 2 ways, for example, as 118810000 + 4414201 = 10900^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 123224201 - 218 = 122962057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123224201.

It is not an unprimeable number, because it can be changed into a prime (123824201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45320 + ... + 47961.

It is an arithmetic number, because the mean of its divisors is an integer number (30829701).

Almost surely, 2123224201 is an apocalyptic number.

It is an amenable number.

123224201 is a deficient number, since it is larger than the sum of its proper divisors (94603).

123224201 is an equidigital number, since it uses as much as digits as its factorization.

123224201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94602.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123224201 is about 11100.6396662535. The cubic root of 123224201 is about 497.6209663509.

Adding to 123224201 its reverse (102422321), we get a palindrome (225646522).

The spelling of 123224201 in words is "one hundred twenty-three million, two hundred twenty-four thousand, two hundred one".

Divisors: 1 1321 93281 123224201