102572409 has 8 divisors (see below), whose sum is σ = 137747680. Its totient is φ = 67889376.

The previous prime is 102572401. The next prime is 102572413. The reversal of 102572409 is 904275201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102572409 - 2³ = 102572401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102572401) by changing a digit.

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, 122572 + ... + 123405.

It is an arithmetic number, because the mean of its divisors is an integer number (17218460).

Almost surely, 2^102572409 is an apocalyptic number.

It is an amenable number.

102572409 is a deficient number, since it is larger than the sum of its proper divisors (35175271).

102572409 is a wasteful number, since it uses less digits than its factorization.

102572409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246119.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 102572409 is about 10127.8037599472. The cubic root of 102572409 is about 468.1052570249.

The spelling of 102572409 in words is "one hundred two million, five hundred seventy-two thousand, four hundred nine".