172140044 has 6 divisors (see below), whose sum is σ = 301245084. Its totient is φ = 86070020.

The previous prime is 172140041. The next prime is 172140047. The reversal of 172140044 is 440041271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (172140041) and next prime (172140047).

It is not an unprimeable number, because it can be changed into a prime (172140041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21517502 + ... + 21517509.

It is an arithmetic number, because the mean of its divisors is an integer number (50207514).

Almost surely, 2^172140044 is an apocalyptic number.

It is an amenable number.

172140044 is a deficient number, since it is larger than the sum of its proper divisors (129105040).

172140044 is a wasteful number, since it uses less digits than its factorization.

172140044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43035015 (or 43035013 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 172140044 is about 13120.2150897003. The cubic root of 172140044 is about 556.2806710521.

The spelling of 172140044 in words is "one hundred seventy-two million, one hundred forty thousand, forty-four".