3121010042 has 8 divisors (see below), whose sum is σ = 4956898356. Its totient is φ = 1468710592.

The previous prime is 3121010041. The next prime is 3121010117. The reversal of 3121010042 is 2400101213.

It can be written as a sum of positive squares in 2 ways, for example, as 2973411841 + 147598201 = 54529^2 + 12149^2 .

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 = 3121009999 and 3121010026.

It is not an unprimeable number, because it can be changed into a prime (3121010041) by changing a digit.

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, 45897173 + ... + 45897240.

Almost surely, 2^3121010042 is an apocalyptic number.

3121010042 is a deficient number, since it is larger than the sum of its proper divisors (1835888314).

3121010042 is a wasteful number, since it uses less digits than its factorization.

3121010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91794432.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3121010042 is about 55866.0007696989. Note that the first 3 decimals coincide. The cubic root of 3121010042 is about 1461.3863796776.

Adding to 3121010042 its reverse (2400101213), we get a palindrome (5521111255).

The spelling of 3121010042 in words is "three billion, one hundred twenty-one million, ten thousand, forty-two".