1251487286142 has 32 divisors (see below), whose sum is σ = 2567831390208. Its totient is φ = 406490659776.

The previous prime is 1251487286099. The next prime is 1251487286171. The reversal of 1251487286142 is 2416827841521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17176158 + ... + 17248865.

It is an arithmetic number, because the mean of its divisors is an integer number (80244730944).

Almost surely, 2^{1251487286142} is an apocalyptic number.

1251487286142 is an abundant number, since it is smaller than the sum of its proper divisors (1316344104066).

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

1251487286142 is a wasteful number, since it uses less digits than its factorization.

1251487286142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34425184.

The product of its digits is 1720320, while the sum is 51.

The spelling of 1251487286142 in words is "one trillion, two hundred fifty-one billion, four hundred eighty-seven million, two hundred eighty-six thousand, one hundred forty-two".