155844842 has 16 divisors (see below), whose sum is σ = 238165920. Its totient is φ = 76461168.

The previous prime is 155844833. The next prime is 155844863. The reversal of 155844842 is 248448551.

It is a super-2 number, since 2×155844842² = 48575229556009928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155844842.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96788 + ... + 98384.

It is an arithmetic number, because the mean of its divisors is an integer number (14885370).

Almost surely, 2^155844842 is an apocalyptic number.

155844842 is a deficient number, since it is larger than the sum of its proper divisors (82321078).

155844842 is a wasteful number, since it uses less digits than its factorization.

155844842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485.

The product of its digits is 204800, while the sum is 41.

The square root of 155844842 is about 12483.7831605647. The cubic root of 155844842 is about 538.1427301042.

The spelling of 155844842 in words is "one hundred fifty-five million, eight hundred forty-four thousand, eight hundred forty-two".