420173967 has 4 divisors (see below), whose sum is σ = 560231960. Its totient is φ = 280115976.

The previous prime is 420173939. The next prime is 420174019. The reversal of 420173967 is 769371024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 420173967 - 2²⁰ = 419125391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420173927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70028992 + ... + 70028997.

It is an arithmetic number, because the mean of its divisors is an integer number (140057990).

Almost surely, 2^420173967 is an apocalyptic number.

420173967 is a deficient number, since it is larger than the sum of its proper divisors (140057993).

420173967 is a wasteful number, since it uses less digits than its factorization.

420173967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140057992.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 420173967 is about 20498.1454526989. The cubic root of 420173967 is about 748.9906225969.

The spelling of 420173967 in words is "four hundred twenty million, one hundred seventy-three thousand, nine hundred sixty-seven".