155855942 has 8 divisors (see below), whose sum is σ = 255037032. Its totient is φ = 70843600.

The previous prime is 155855933. The next prime is 155855969. The reversal of 155855942 is 249558551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 155855893 and 155855902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3542159 + ... + 3542202.

It is an arithmetic number, because the mean of its divisors is an integer number (31879629).

Almost surely, 2^155855942 is an apocalyptic number.

155855942 is a deficient number, since it is larger than the sum of its proper divisors (99181090).

155855942 is a wasteful number, since it uses less digits than its factorization.

155855942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7084374.

The product of its digits is 360000, while the sum is 44.

The square root of 155855942 is about 12484.2277294192. The cubic root of 155855942 is about 538.1555061500.

The spelling of 155855942 in words is "one hundred fifty-five million, eight hundred fifty-five thousand, nine hundred forty-two".