155952442 has 4 divisors (see below), whose sum is σ = 233928666. Its totient is φ = 77976220.

The previous prime is 155952427. The next prime is 155952451. The reversal of 155952442 is 244259551.

155952442 is digitally balanced in base 2, 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 can be written as a sum of positive squares in only one way, i.e., 98783721 + 57168721 = 9939^2 + 7561^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38988109 + ... + 38988112.

Almost surely, 2^155952442 is an apocalyptic number.

155952442 is a deficient number, since it is larger than the sum of its proper divisors (77976224).

155952442 is an equidigital number, since it uses as much as digits as its factorization.

155952442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77976223.

The product of its digits is 72000, while the sum is 37.

The square root of 155952442 is about 12488.0920079891. The cubic root of 155952442 is about 538.2665516263.

The spelling of 155952442 in words is "one hundred fifty-five million, nine hundred fifty-two thousand, four hundred forty-two".