521418342 has 32 divisors (see below), whose sum is σ = 1056556800. Its totient is φ = 171531360.

The previous prime is 521418307. The next prime is 521418343. The reversal of 521418342 is 243814125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521418343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203284 + ... + 205832.

It is an arithmetic number, because the mean of its divisors is an integer number (33017400).

Almost surely, 2^521418342 is an apocalyptic number.

521418342 is an abundant number, since it is smaller than the sum of its proper divisors (535138458).

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

521418342 is a wasteful number, since it uses less digits than its factorization.

521418342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988.

The product of its digits is 7680, while the sum is 30.

The square root of 521418342 is about 22834.5865300863. The cubic root of 521418342 is about 804.8756116075.

The spelling of 521418342 in words is "five hundred twenty-one million, four hundred eighteen thousand, three hundred forty-two".