156422974 has 4 divisors (see below), whose sum is σ = 234634464. Its totient is φ = 78211486.

The previous prime is 156422941. The next prime is 156422999. The reversal of 156422974 is 479224651.

156422974 is digitally balanced in base 3, 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 is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39105742 + ... + 39105745.

It is an arithmetic number, because the mean of its divisors is an integer number (58658616).

Almost surely, 2^156422974 is an apocalyptic number.

156422974 is a deficient number, since it is larger than the sum of its proper divisors (78211490).

156422974 is an equidigital number, since it uses as much as digits as its factorization.

156422974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78211489.

The product of its digits is 120960, while the sum is 40.

The square root of 156422974 is about 12506.9170461789. The cubic root of 156422974 is about 538.8073518437.

The spelling of 156422974 in words is "one hundred fifty-six million, four hundred twenty-two thousand, nine hundred seventy-four".