158731742 has 16 divisors (see below), whose sum is σ = 256904592. Its totient is φ = 73120320.

The previous prime is 158731733. The next prime is 158731799. The reversal of 158731742 is 247137851.

It is a junction number, because it is equal to n+sod(n) for n = 158731696 and 158731705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8642 + ... + 19802.

It is an arithmetic number, because the mean of its divisors is an integer number (16056537).

Almost surely, 2^158731742 is an apocalyptic number.

158731742 is a deficient number, since it is larger than the sum of its proper divisors (98172850).

158731742 is a wasteful number, since it uses less digits than its factorization.

158731742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11723.

The product of its digits is 47040, while the sum is 38.

The square root of 158731742 is about 12598.8786008914. The cubic root of 158731742 is about 541.4453074313.

It can be divided in two parts, 15873 and 1742, that multiplied together give a triangular number (27650766 = T₇₄₃₆).

The spelling of 158731742 in words is "one hundred fifty-eight million, seven hundred thirty-one thousand, seven hundred forty-two".