421530746 has 32 divisors (see below), whose sum is σ = 803324928. Its totient is φ = 161377920.

The previous prime is 421530743. The next prime is 421530757. The reversal of 421530746 is 647035124.

It is not an unprimeable number, because it can be changed into a prime (421530743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31715 + ... + 42998.

It is an arithmetic number, because the mean of its divisors is an integer number (25103904).

Almost surely, 2^421530746 is an apocalyptic number.

421530746 is a deficient number, since it is larger than the sum of its proper divisors (381794182).

421530746 is a wasteful number, since it uses less digits than its factorization.

421530746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74766.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 421530746 is about 20531.2139436517. The cubic root of 421530746 is about 749.7959421152.

The spelling of 421530746 in words is "four hundred twenty-one million, five hundred thirty thousand, seven hundred forty-six".