158664042 has 16 divisors (see below), whose sum is σ = 352586880. Its totient is φ = 52887996.

The previous prime is 158664013. The next prime is 158664059. The reversal of 158664042 is 240466851.

158664042 is a `hidden beast` number, since 1 + 5 + 8 + 6 + 640 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 158663988 and 158664006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469058 + ... + 1469165.

It is an arithmetic number, because the mean of its divisors is an integer number (22036680).

Almost surely, 2^158664042 is an apocalyptic number.

158664042 is an abundant number, since it is smaller than the sum of its proper divisors (193922838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158664042 is a wasteful number, since it uses less digits than its factorization.

158664042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938234 (or 2938228 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 158664042 is about 12596.1915672953. The cubic root of 158664042 is about 541.3683199735.

The spelling of 158664042 in words is "one hundred fifty-eight million, six hundred sixty-four thousand, forty-two".