421440710 has 32 divisors (see below), whose sum is σ = 845497440. Its totient is φ = 150308352.

The previous prime is 421440703. The next prime is 421440743. The reversal of 421440710 is 17044124.

It is a happy number.

It is a super-2 number, since 2×421440710² = 355224544090608200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62009 + ... + 68468.

It is an arithmetic number, because the mean of its divisors is an integer number (26421795).

Almost surely, 2^421440710 is an apocalyptic number.

421440710 is an abundant number, since it is smaller than the sum of its proper divisors (424056730).

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

421440710 is a wasteful number, since it uses less digits than its factorization.

421440710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130520.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 421440710 is about 20529.0211651701. The cubic root of 421440710 is about 749.7425546022.

Adding to 421440710 its reverse (17044124), we get a palindrome (438484834).

The spelling of 421440710 in words is "four hundred twenty-one million, four hundred forty thousand, seven hundred ten".