42172667 has 2 divisors, whose sum is σ = 42172668. Its totient is φ = 42172666.

The previous prime is 42172661. The next prime is 42172673. The reversal of 42172667 is 76627124.

It is a balanced prime because it is at equal distance from previous prime (42172661) and next prime (42172673).

It is a cyclic number.

It is not a de Polignac number, because 42172667 - 2²⁴ = 25395451 is a prime.

It is not a weakly prime, because it can be changed into another prime (42172661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21086333 + 21086334.

It is an arithmetic number, because the mean of its divisors is an integer number (21086334).

Almost surely, 2^42172667 is an apocalyptic number.

42172667 is a deficient number, since it is larger than the sum of its proper divisors (1).

42172667 is an equidigital number, since it uses as much as digits as its factorization.

42172667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 42172667 is about 6494.0485831259. The cubic root of 42172667 is about 348.0783585164.

The spelling of 42172667 in words is "forty-two million, one hundred seventy-two thousand, six hundred sixty-seven".