155674442 has 32 divisors (see below), whose sum is σ = 303796224. Its totient is φ = 58014000.

The previous prime is 155674411. The next prime is 155674451. The reversal of 155674442 is 244476551.

155674442 = T₃₄₈ + T₃₄₉ + ... + T₉₉₁.

It is a happy number.

155674442 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155674442² = 48469063784022728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 155674396 and 155674405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18434 + ... + 25517.

It is an arithmetic number, because the mean of its divisors is an integer number (9493632).

Almost surely, 2^155674442 is an apocalyptic number.

155674442 is a deficient number, since it is larger than the sum of its proper divisors (148121782).

155674442 is a wasteful number, since it uses less digits than its factorization.

155674442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43994.

The product of its digits is 134400, while the sum is 38.

The square root of 155674442 is about 12476.9564397733. The cubic root of 155674442 is about 537.9465243532.

The spelling of 155674442 in words is "one hundred fifty-five million, six hundred seventy-four thousand, four hundred forty-two".