521412042 has 16 divisors (see below), whose sum is σ = 1043047872. Its totient is φ = 173766720.

The previous prime is 521412037. The next prime is 521412043. The reversal of 521412042 is 240214125.

It is not an unprimeable number, because it can be changed into a prime (521412043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50067 + ... + 59577.

It is an arithmetic number, because the mean of its divisors is an integer number (65190492).

Almost surely, 2^521412042 is an apocalyptic number.

521412042 is an abundant number, since it is smaller than the sum of its proper divisors (521635830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521412042 is a wasteful number, since it uses less digits than its factorization.

521412042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18653.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 521412042 is about 22834.4485810365. The cubic root of 521412042 is about 804.8723699770.

Adding to 521412042 its reverse (240214125), we get a palindrome (761626167).

The spelling of 521412042 in words is "five hundred twenty-one million, four hundred twelve thousand, forty-two".