3121042445 has 8 divisors (see below), whose sum is σ = 3760922880. Its totient is φ = 2486386000.

The previous prime is 3121042433. The next prime is 3121042471. The reversal of 3121042445 is 5442401213.

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

It is not a de Polignac number, because 3121042445 - 2¹⁸ = 3120780301 is a prime.

It is a congruent number.

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, 1304681 + ... + 1307070.

It is an arithmetic number, because the mean of its divisors is an integer number (470115360).

Almost surely, 2^3121042445 is an apocalyptic number.

It is an amenable number.

3121042445 is a deficient number, since it is larger than the sum of its proper divisors (639880435).

3121042445 is a wasteful number, since it uses less digits than its factorization.

3121042445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611995.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 3121042445 is about 55866.2907753862. The cubic root of 3121042445 is about 1461.3914371364.

Adding to 3121042445 its reverse (5442401213), we get a palindrome (8563443658).

The spelling of 3121042445 in words is "three billion, one hundred twenty-one million, forty-two thousand, four hundred forty-five".