172429144 has 8 divisors (see below), whose sum is σ = 323304660. Its totient is φ = 86214568.

The previous prime is 172429129. The next prime is 172429151. The reversal of 172429144 is 441924271.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 10776814 + ... + 10776829.

Almost surely, 2^172429144 is an apocalyptic number.

It is an amenable number.

172429144 is a deficient number, since it is larger than the sum of its proper divisors (150875516).

172429144 is a wasteful number, since it uses less digits than its factorization.

172429144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21553649 (or 21553645 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 172429144 is about 13131.2278176871. The cubic root of 172429144 is about 556.5919114280.

The spelling of 172429144 in words is "one hundred seventy-two million, four hundred twenty-nine thousand, one hundred forty-four".