166542436 has 12 divisors (see below), whose sum is σ = 295799728. Its totient is φ = 82028232.

The previous prime is 166542401. The next prime is 166542437. The reversal of 166542436 is 634245661.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166542395 and 166542404.

It is not an unprimeable number, because it can be changed into a prime (166542437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310446 + ... + 310981.

Almost surely, 2^166542436 is an apocalyptic number.

It is an amenable number.

166542436 is a deficient number, since it is larger than the sum of its proper divisors (129257292).

166542436 is a wasteful number, since it uses less digits than its factorization.

166542436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621498 (or 621496 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 166542436 is about 12905.1321574016. The cubic root of 166542436 is about 550.1844406209.

The spelling of 166542436 in words is "one hundred sixty-six million, five hundred forty-two thousand, four hundred thirty-six".