157142786 has 4 divisors (see below), whose sum is σ = 235714182. Its totient is φ = 78571392.

The previous prime is 157142773. The next prime is 157142801. The reversal of 157142786 is 687241751.

157142786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 146047225 + 11095561 = 12085^2 + 3331^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39285695 + ... + 39285698.

Almost surely, 2^157142786 is an apocalyptic number.

157142786 is a deficient number, since it is larger than the sum of its proper divisors (78571396).

157142786 is an equidigital number, since it uses as much as digits as its factorization.

157142786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78571395.

The product of its digits is 94080, while the sum is 41.

The square root of 157142786 is about 12535.6605729415. The cubic root of 157142786 is about 539.6325643978.

The spelling of 157142786 in words is "one hundred fifty-seven million, one hundred forty-two thousand, seven hundred eighty-six".