421026672 has 40 divisors (see below), whose sum is σ = 1186531200. Its totient is φ = 127583680.

The previous prime is 421026653. The next prime is 421026673. The reversal of 421026672 is 276620124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421026673) 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 in 7 ways as a sum of consecutive naturals, for example, 398172 + ... + 399227.

It is an arithmetic number, because the mean of its divisors is an integer number (29663280).

Almost surely, 2^421026672 is an apocalyptic number.

It is an amenable number.

421026672 is an abundant number, since it is smaller than the sum of its proper divisors (765504528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421026672 is a wasteful number, since it uses less digits than its factorization.

421026672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797421 (or 797415 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 421026672 is about 20518.9344752597. The cubic root of 421026672 is about 749.4969497738.

Adding to 421026672 its reverse (276620124), we get a palindrome (697646796).

The spelling of 421026672 in words is "four hundred twenty-one million, twenty-six thousand, six hundred seventy-two".