747142857 has 12 divisors (see below), whose sum is σ = 1079445744. Its totient is φ = 497984760.

The previous prime is 747142853. The next prime is 747142859. The reversal of 747142857 is 758241747.

747142857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 747142857 - 2² = 747142853 is a prime.

It is a super-2 number, since 2×747142857² = 1116444897532244898, which contains 22 as substring.

747142857 is a modest number, since divided by 142857 gives 747 as remainder.

It is not an unprimeable number, because it can be changed into a prime (747142853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65682 + ... + 76212.

It is an arithmetic number, because the mean of its divisors is an integer number (89953812).

Almost surely, 2^747142857 is an apocalyptic number.

It is an amenable number.

747142857 is a deficient number, since it is larger than the sum of its proper divisors (332302887).

747142857 is a wasteful number, since it uses less digits than its factorization.

747142857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18420 (or 18417 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 747142857 is about 27333.9140446442. The cubic root of 747142857 is about 907.4051008386.

The spelling of 747142857 in words is "seven hundred forty-seven million, one hundred forty-two thousand, eight hundred fifty-seven".