172142926 has 16 divisors (see below), whose sum is σ = 272946960. Its totient is φ = 81198720.

The previous prime is 172142923. The next prime is 172142941. The reversal of 172142926 is 629241271.

It is a junction number, because it is equal to n+sod(n) for n = 172142891 and 172142900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172142923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (17059185).

Almost surely, 2^172142926 is an apocalyptic number.

172142926 is a deficient number, since it is larger than the sum of its proper divisors (100804034).

172142926 is a wasteful number, since it uses less digits than its factorization.

172142926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19059.

The product of its digits is 12096, while the sum is 34.

The square root of 172142926 is about 13120.3249197571. The cubic root of 172142926 is about 556.2837754856.

The spelling of 172142926 in words is "one hundred seventy-two million, one hundred forty-two thousand, nine hundred twenty-six".