172154442 has 16 divisors (see below), whose sum is σ = 344437632. Its totient is φ = 57363360.

The previous prime is 172154431. The next prime is 172154539. The reversal of 172154442 is 244451271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27663 + ... + 33309.

It is an arithmetic number, because the mean of its divisors is an integer number (21527352).

Almost surely, 2^172154442 is an apocalyptic number.

172154442 is an abundant number, since it is smaller than the sum of its proper divisors (172283190).

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

172154442 is a wasteful number, since it uses less digits than its factorization.

172154442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733.

The product of its digits is 8960, while the sum is 30.

The square root of 172154442 is about 13120.7637735004. The cubic root of 172154442 is about 556.2961799475.

The spelling of 172154442 in words is "one hundred seventy-two million, one hundred fifty-four thousand, four hundred forty-two".