172142107500 has 120 divisors (see below), whose sum is σ = 547549877952. Its totient is φ = 41731400000.

The previous prime is 172142107481. The next prime is 172142107531. The reversal of 172142107500 is 5701241271.

172142107500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 960786 + ... + 1125785.

Almost surely, 2^172142107500 is an apocalyptic number.

172142107500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172142107500 is an abundant number, since it is smaller than the sum of its proper divisors (375407770452).

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

172142107500 is a wasteful number, since it uses less digits than its factorization.

172142107500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086609 (or 2086592 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

Adding to 172142107500 its reverse (5701241271), we get a palindrome (177843348771).

The spelling of 172142107500 in words is "one hundred seventy-two billion, one hundred forty-two million, one hundred seven thousand, five hundred".