42177988 has 12 divisors (see below), whose sum is σ = 75382272. Its totient is φ = 20640200.

The previous prime is 42177973. The next prime is 42177991. The reversal of 42177988 is 88977124.

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, 111988 + ... + 112363.

It is an arithmetic number, because the mean of its divisors is an integer number (6281856).

Almost surely, 2^42177988 is an apocalyptic number.

It is an amenable number.

42177988 is a deficient number, since it is larger than the sum of its proper divisors (33204284).

42177988 is a wasteful number, since it uses less digits than its factorization.

42177988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224402 (or 224400 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 42177988 is about 6494.4582530031. The cubic root of 42177988 is about 348.0929971215.

The spelling of 42177988 in words is "forty-two million, one hundred seventy-seven thousand, nine hundred eighty-eight".