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120213253 = 137877469
BaseRepresentation
bin1110010101001…
…00111100000101
322101012110120201
413022210330011
5221233311003
615532330501
72656536646
oct712447405
9271173521
10120213253
1161947aa6
1234313a31
131bba0004
1411d736cd
15a848b1d
hex72a4f05

120213253 has 4 divisors (see below), whose sum is σ = 121090860. Its totient is φ = 119335648.

The previous prime is 120213229. The next prime is 120213293. The reversal of 120213253 is 352312021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352312021 = 1321266701.

It can be written as a sum of positive squares in 2 ways, for example, as 32285124 + 87928129 = 5682^2 + 9377^2 .

It is a cyclic number.

It is not a de Polignac number, because 120213253 - 25 = 120213221 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 120213253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120213293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438598 + ... + 438871.

It is an arithmetic number, because the mean of its divisors is an integer number (30272715).

Almost surely, 2120213253 is an apocalyptic number.

It is an amenable number.

120213253 is a deficient number, since it is larger than the sum of its proper divisors (877607).

120213253 is an equidigital number, since it uses as much as digits as its factorization.

120213253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877606.

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

The square root of 120213253 is about 10964.1804527288. The cubic root of 120213253 is about 493.5344236925.

Adding to 120213253 its reverse (352312021), we get a palindrome (472525274).

The spelling of 120213253 in words is "one hundred twenty million, two hundred thirteen thousand, two hundred fifty-three".

Divisors: 1 137 877469 120213253