3871457656242 has 32 divisors (see below), whose sum is σ = 8447023872000. Its totient is φ = 1173140213520.

The previous prime is 3871457656217. The next prime is 3871457656247. The reversal of 3871457656242 is 2426567541783.

It is not an unprimeable number, because it can be changed into a prime (3871457656247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2073603 + ... + 3470265.

It is an arithmetic number, because the mean of its divisors is an integer number (263969496000).

Almost surely, 2^{3871457656242} is an apocalyptic number.

3871457656242 is an abundant number, since it is smaller than the sum of its proper divisors (4575566215758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3871457656242 is a wasteful number, since it uses less digits than its factorization.

3871457656242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438678.

The product of its digits is 67737600, while the sum is 60.

The spelling of 3871457656242 in words is "three trillion, eight hundred seventy-one billion, four hundred fifty-seven million, six hundred fifty-six thousand, two hundred forty-two".