156377442 has 16 divisors (see below), whose sum is σ = 336813120. Its totient is φ = 48116112.

The previous prime is 156377411. The next prime is 156377447. The reversal of 156377442 is 244773651.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 156377442.

It is not an unprimeable number, because it can be changed into a prime (156377447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002342 + ... + 1002497.

It is an arithmetic number, because the mean of its divisors is an integer number (21050820).

Almost surely, 2^156377442 is an apocalyptic number.

156377442 is an abundant number, since it is smaller than the sum of its proper divisors (180435678).

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

156377442 is a wasteful number, since it uses less digits than its factorization.

156377442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004857.

The product of its digits is 141120, while the sum is 39.

The square root of 156377442 is about 12505.0966409700. The cubic root of 156377442 is about 538.7550676289.

The spelling of 156377442 in words is "one hundred fifty-six million, three hundred seventy-seven thousand, four hundred forty-two".