521412542 has 16 divisors (see below), whose sum is σ = 946429920. Its totient is φ = 210317568.

The previous prime is 521412533. The next prime is 521412581. The reversal of 521412542 is 245214125.

It is a congruent number.

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, 1095167 + ... + 1095642.

It is an arithmetic number, because the mean of its divisors is an integer number (59151870).

Almost surely, 2^521412542 is an apocalyptic number.

521412542 is a deficient number, since it is larger than the sum of its proper divisors (425017378).

521412542 is a wasteful number, since it uses less digits than its factorization.

521412542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190835.

The product of its digits is 3200, while the sum is 26.

The square root of 521412542 is about 22834.4595294042. The cubic root of 521412542 is about 804.8726272503.

Adding to 521412542 its reverse (245214125), we get a palindrome (766626667).

The spelling of 521412542 in words is "five hundred twenty-one million, four hundred twelve thousand, five hundred forty-two".