172142941 has 2 divisors, whose sum is σ = 172142942. Its totient is φ = 172142940.

The previous prime is 172142923. The next prime is 172142951. The reversal of 172142941 is 149241271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93199716 + 78943225 = 9654^2 + 8885^2 .

It is a cyclic number.

It is not a de Polignac number, because 172142941 - 2⁷ = 172142813 is a prime.

It is a super-2 number, since 2×172142941² = 59266384272258962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172142951) 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 as a sum of consecutive naturals, namely, 86071470 + 86071471.

It is an arithmetic number, because the mean of its divisors is an integer number (86071471).

Almost surely, 2^172142941 is an apocalyptic number.

It is an amenable number.

172142941 is a deficient number, since it is larger than the sum of its proper divisors (1).

172142941 is an equidigital number, since it uses as much as digits as its factorization.

172142941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 172142941 is about 13120.3254913893. The cubic root of 172142941 is about 556.2837916432.

The spelling of 172142941 in words is "one hundred seventy-two million, one hundred forty-two thousand, nine hundred forty-one".