420674751 has 24 divisors (see below), whose sum is σ = 708624800. Its totient is φ = 240383808.

The previous prime is 420674747. The next prime is 420674753. The reversal of 420674751 is 157476024.

It is not a de Polignac number, because 420674751 - 2² = 420674747 is a prime.

It is a super-3 number, since 3×420674751³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420674753) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65050 + ... + 71223.

Almost surely, 2^420674751 is an apocalyptic number.

420674751 is a deficient number, since it is larger than the sum of its proper divisors (287950049).

420674751 is a wasteful number, since it uses less digits than its factorization.

420674751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136300 (or 136283 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 420674751 is about 20510.3571641256. The cubic root of 420674751 is about 749.2880657467.

The spelling of 420674751 in words is "four hundred twenty million, six hundred seventy-four thousand, seven hundred fifty-one".