7142886457 has 6 divisors (see below), whose sum is σ = 8309072058. Its totient is φ = 6122474064.

The previous prime is 7142886449. The next prime is 7142886469. The reversal of 7142886457 is 7546882417.

It can be written as a sum of positive squares in only one way, i.e., 5205478201 + 1937408256 = 72149^2 + 44016^2 .

It is not a de Polignac number, because 7142886457 - 2³ = 7142886449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7142886497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72886548 + ... + 72886645.

It is an arithmetic number, because the mean of its divisors is an integer number (1384845343).

Almost surely, 2^7142886457 is an apocalyptic number.

It is an amenable number.

7142886457 is a deficient number, since it is larger than the sum of its proper divisors (1166185601).

7142886457 is a wasteful number, since it uses less digits than its factorization.

7142886457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145773207 (or 145773200 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 52.

The square root of 7142886457 is about 84515.5988974816. The cubic root of 7142886457 is about 1925.8594201098.

The spelling of 7142886457 in words is "seven billion, one hundred forty-two million, eight hundred eighty-six thousand, four hundred fifty-seven".