520123442 has 16 divisors (see below), whose sum is σ = 840348960. Its totient is φ = 240643872.

The previous prime is 520123433. The next prime is 520123451. The reversal of 520123442 is 244321025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520123433) and next prime (520123451).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157523 + ... + 160790.

It is an arithmetic number, because the mean of its divisors is an integer number (52521810).

Almost surely, 2^520123442 is an apocalyptic number.

520123442 is a deficient number, since it is larger than the sum of its proper divisors (320225518).

520123442 is a wasteful number, since it uses less digits than its factorization.

520123442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318377.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 520123442 is about 22806.2149862707. The cubic root of 520123442 is about 804.2087782768.

Adding to 520123442 its reverse (244321025), we get a palindrome (764444467).

The spelling of 520123442 in words is "five hundred twenty million, one hundred twenty-three thousand, four hundred forty-two".