3121409042 has 16 divisors (see below), whose sum is σ = 4766191200. Its totient is φ = 1532731200.

The previous prime is 3121409041. The next prime is 3121409069. The reversal of 3121409042 is 2409041213.

It is not an unprimeable number, because it can be changed into a prime (3121409041) 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, 111434 + ... + 136602.

It is an arithmetic number, because the mean of its divisors is an integer number (297886950).

Almost surely, 2^3121409042 is an apocalyptic number.

3121409042 is a deficient number, since it is larger than the sum of its proper divisors (1644782158).

3121409042 is a wasteful number, since it uses less digits than its factorization.

3121409042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26281.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3121409042 is about 55869.5717005241. The cubic root of 3121409042 is about 1461.4486531416.

The spelling of 3121409042 in words is "three billion, one hundred twenty-one million, four hundred nine thousand, forty-two".