172040419 has 2 divisors, whose sum is σ = 172040420. Its totient is φ = 172040418.

The previous prime is 172040413. The next prime is 172040431. The reversal of 172040419 is 914040271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172040419 - 2¹⁵ = 172007651 is a prime.

It is a super-2 number, since 2×172040419² = 59195811539391122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172040413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86020209 + 86020210.

It is an arithmetic number, because the mean of its divisors is an integer number (86020210).

Almost surely, 2^172040419 is an apocalyptic number.

172040419 is a deficient number, since it is larger than the sum of its proper divisors (1).

172040419 is an equidigital number, since it uses as much as digits as its factorization.

172040419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 172040419 is about 13116.4179180140. The cubic root of 172040419 is about 556.1733356617.

The spelling of 172040419 in words is "one hundred seventy-two million, forty thousand, four hundred nineteen".