158742857 has 32 divisors (see below), whose sum is σ = 202159104. Its totient is φ = 121305600.

The previous prime is 158742851. The next prime is 158742869. The reversal of 158742857 is 758247851.

158742857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-158742857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158742851) 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, 585632 + ... + 585902.

It is an arithmetic number, because the mean of its divisors is an integer number (6317472).

Almost surely, 2^158742857 is an apocalyptic number.

It is an amenable number.

158742857 is a deficient number, since it is larger than the sum of its proper divisors (43416247).

158742857 is a wasteful number, since it uses less digits than its factorization.

158742857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its digits is 627200, while the sum is 47.

The square root of 158742857 is about 12599.3197038570. The cubic root of 158742857 is about 541.4579451559.

It can be divided in two parts, 1587 and 42857, that added together give a palindrome (44444).

The spelling of 158742857 in words is "one hundred fifty-eight million, seven hundred forty-two thousand, eight hundred fifty-seven".