172690042 has 8 divisors (see below), whose sum is σ = 296040096. Its totient is φ = 74010012.

The previous prime is 172690039. The next prime is 172690043. The reversal of 172690042 is 240096271.

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

It is a junction number, because it is equal to n+sod(n) for n = 172689986 and 172690013.

It is not an unprimeable number, because it can be changed into a prime (172690043) 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 3 ways as a sum of consecutive naturals, for example, 6167488 + ... + 6167515.

It is an arithmetic number, because the mean of its divisors is an integer number (37005012).

Almost surely, 2^172690042 is an apocalyptic number.

172690042 is a deficient number, since it is larger than the sum of its proper divisors (123350054).

172690042 is a wasteful number, since it uses less digits than its factorization.

172690042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12335012.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 172690042 is about 13141.1583203308. The cubic root of 172690042 is about 556.8724914872.

The spelling of 172690042 in words is "one hundred seventy-two million, six hundred ninety thousand, forty-two".