172292642 has 8 divisors (see below), whose sum is σ = 259122000. Its totient is φ = 85918644.

The previous prime is 172292639. The next prime is 172292651. The reversal of 172292642 is 246292271.

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

It is a super-3 number, since 3×172292642³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112892 + ... + 114407.

It is an arithmetic number, because the mean of its divisors is an integer number (32390250).

Almost surely, 2^172292642 is an apocalyptic number.

172292642 is a deficient number, since it is larger than the sum of its proper divisors (86829358).

172292642 is a wasteful number, since it uses less digits than its factorization.

172292642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227680.

The product of its digits is 24192, while the sum is 35.

The square root of 172292642 is about 13126.0291786968. The cubic root of 172292642 is about 556.4449989732. Note that the first 3 decimals are identical.

The spelling of 172292642 in words is "one hundred seventy-two million, two hundred ninety-two thousand, six hundred forty-two".