172488942 has 24 divisors (see below), whose sum is σ = 377928720. Its totient is φ = 56849760.

The previous prime is 172488941. The next prime is 172488959. The reversal of 172488942 is 249884271.

It is a super-2 number, since 2×172488942² = 59504870224558728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172488941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52234 + ... + 55437.

It is an arithmetic number, because the mean of its divisors is an integer number (15747030).

Almost surely, 2^172488942 is an apocalyptic number.

172488942 is an abundant number, since it is smaller than the sum of its proper divisors (205439778).

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

172488942 is a wasteful number, since it uses less digits than its factorization.

172488942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107768 (or 107765 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 172488942 is about 13133.5045589515. The cubic root of 172488942 is about 556.6562455569.

The spelling of 172488942 in words is "one hundred seventy-two million, four hundred eighty-eight thousand, nine hundred forty-two".