521332142 has 8 divisors (see below), whose sum is σ = 795252600. Its totient is φ = 256247944.

The previous prime is 521332121. The next prime is 521332151. The reversal of 521332142 is 241233125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208917 + ... + 2209152.

It is an arithmetic number, because the mean of its divisors is an integer number (99406575).

Almost surely, 2^521332142 is an apocalyptic number.

521332142 is a deficient number, since it is larger than the sum of its proper divisors (273920458).

521332142 is a wasteful number, since it uses less digits than its factorization.

521332142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418130.

The product of its digits is 1440, while the sum is 23.

The square root of 521332142 is about 22832.6989644238. The cubic root of 521332142 is about 804.8312556041.

Adding to 521332142 its reverse (241233125), we get a palindrome (762565267).

The spelling of 521332142 in words is "five hundred twenty-one million, three hundred thirty-two thousand, one hundred forty-two".