156401742 has 32 divisors (see below), whose sum is σ = 357921792. Its totient is φ = 44632224.

The previous prime is 156401741. The next prime is 156401767. The reversal of 156401742 is 247104651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156401741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44203 + ... + 47609.

It is an arithmetic number, because the mean of its divisors is an integer number (11185056).

Almost surely, 2^156401742 is an apocalyptic number.

156401742 is an abundant number, since it is smaller than the sum of its proper divisors (201520050).

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

156401742 is a wasteful number, since it uses less digits than its factorization.

156401742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 156401742 is about 12506.0682070745. The cubic root of 156401742 is about 538.7829724851.

The spelling of 156401742 in words is "one hundred fifty-six million, four hundred one thousand, seven hundred forty-two".