331520042 has 8 divisors (see below), whose sum is σ = 568320096. Its totient is φ = 142080012.

The previous prime is 331520041. The next prime is 331520053. The reversal of 331520042 is 240025133.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 331519996 and 331520023.

It is not an unprimeable number, because it can be changed into a prime (331520041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11839988 + ... + 11840015.

It is an arithmetic number, because the mean of its divisors is an integer number (71040012).

Almost surely, 2^331520042 is an apocalyptic number.

331520042 is a deficient number, since it is larger than the sum of its proper divisors (236800054).

331520042 is a wasteful number, since it uses less digits than its factorization.

331520042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23680012.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 331520042 is about 18207.6918361444. The cubic root of 331520042 is about 692.1017216565.

Adding to 331520042 its reverse (240025133), we get a palindrome (571545175).

The spelling of 331520042 in words is "three hundred thirty-one million, five hundred twenty thousand, forty-two".