331240042 has 16 divisors (see below), whose sum is σ = 577465920. Its totient is φ = 139553568.

The previous prime is 331240033. The next prime is 331240099. The reversal of 331240042 is 240042133.

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, 199683 + ... + 201334.

It is an arithmetic number, because the mean of its divisors is an integer number (36091620).

Almost surely, 2^331240042 is an apocalyptic number.

331240042 is a deficient number, since it is larger than the sum of its proper divisors (246225878).

331240042 is a wasteful number, since it uses less digits than its factorization.

331240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401085.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 331240042 is about 18200.0011538461. The cubic root of 331240042 is about 691.9068183418.

Adding to 331240042 its reverse (240042133), we get a palindrome (571282175).

The spelling of 331240042 in words is "three hundred thirty-one million, two hundred forty thousand, forty-two".