172431120 has 40 divisors (see below), whose sum is σ = 534537216. Its totient is φ = 45981568.

The previous prime is 172431073. The next prime is 172431121. The reversal of 172431120 is 21134271.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×172431120² = 59464982288908800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172431121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 358992 + ... + 359471.

Almost surely, 2^172431120 is an apocalyptic number.

172431120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172431120 is an abundant number, since it is smaller than the sum of its proper divisors (362106096).

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

172431120 is a wasteful number, since it uses less digits than its factorization.

172431120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718479 (or 718473 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 172431120 is about 13131.3030579604. The cubic root of 172431120 is about 556.5940375601.

Adding to 172431120 its reverse (21134271), we get a palindrome (193565391).

The spelling of 172431120 in words is "one hundred seventy-two million, four hundred thirty-one thousand, one hundred twenty".