3157862421 has 32 divisors (see below), whose sum is σ = 5232764160. Its totient is φ = 1652438016.

The previous prime is 3157862419. The next prime is 3157862429. The reversal of 3157862421 is 1242687513.

It is not a de Polignac number, because 3157862421 - 2¹ = 3157862419 is a prime.

It is a super-3 number, since 3×3157862421³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3157862421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157862429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106326 + ... + 132743.

It is an arithmetic number, because the mean of its divisors is an integer number (163523880).

Almost surely, 2^3157862421 is an apocalyptic number.

It is an amenable number.

3157862421 is a deficient number, since it is larger than the sum of its proper divisors (2074901739).

3157862421 is a wasteful number, since it uses less digits than its factorization.

3157862421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239133.

The product of its digits is 80640, while the sum is 39.

The square root of 3157862421 is about 56194.8611618536. The cubic root of 3157862421 is about 1467.1158252837.

The spelling of 3157862421 in words is "three billion, one hundred fifty-seven million, eight hundred sixty-two thousand, four hundred twenty-one".