123257413 has 4 divisors (see below), whose sum is σ = 123623500. Its totient is φ = 122891328.

The previous prime is 123257411. The next prime is 123257417. The reversal of 123257413 is 314752321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36264484 + 86992929 = 6022^2 + 9327^2 .

It is a cyclic number.

It is not a de Polignac number, because 123257413 - 2¹ = 123257411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123257411) 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, 182538 + ... + 183211.

It is an arithmetic number, because the mean of its divisors is an integer number (30905875).

Almost surely, 2^123257413 is an apocalyptic number.

It is an amenable number.

123257413 is a deficient number, since it is larger than the sum of its proper divisors (366087).

123257413 is an equidigital number, since it uses as much as digits as its factorization.

123257413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366086.

The product of its digits is 5040, while the sum is 28.

The square root of 123257413 is about 11102.1355152961. The cubic root of 123257413 is about 497.6656694282.

The spelling of 123257413 in words is "one hundred twenty-three million, two hundred fifty-seven thousand, four hundred thirteen".