155055042 has 24 divisors (see below), whose sum is σ = 337700844. Its totient is φ = 51416064.

The previous prime is 155055041. The next prime is 155055077. The reversal of 155055042 is 240550551.

155055042 is a `hidden beast` number, since 155 + 0 + 5 + 504 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 154032921 + 1022121 = 12411^2 + 1011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155054997 and 155055015.

It is not an unprimeable number, because it can be changed into a prime (155055041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18843 + ... + 25790.

Almost surely, 2^155055042 is an apocalyptic number.

155055042 is an abundant number, since it is smaller than the sum of its proper divisors (182645802).

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

155055042 is a wasteful number, since it uses less digits than its factorization.

155055042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44834 (or 44831 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 155055042 is about 12452.1099416926. The cubic root of 155055042 is about 537.2321125513.

The spelling of 155055042 in words is "one hundred fifty-five million, fifty-five thousand, forty-two".