172121048 has 24 divisors (see below), whose sum is σ = 354734940. Its totient is φ = 78236400.

The previous prime is 172121023. The next prime is 172121063. The reversal of 172121048 is 840121271.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 87938 + ... + 89873.

Almost surely, 2^172121048 is an apocalyptic number.

It is an amenable number.

172121048 is an abundant number, since it is smaller than the sum of its proper divisors (182613892).

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

172121048 is a wasteful number, since it uses less digits than its factorization.

172121048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177839 (or 177824 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 172121048 is about 13119.4911486688. The cubic root of 172121048 is about 556.2602080692.

The spelling of 172121048 in words is "one hundred seventy-two million, one hundred twenty-one thousand, forty-eight".