421442310 has 32 divisors (see below), whose sum is σ = 1028609280. Its totient is φ = 110479328.

The previous prime is 421442309. The next prime is 421442311. The reversal of 421442310 is 13244124.

It is an interprime number because it is at equal distance from previous prime (421442309) and next prime (421442311).

It is a super-2 number, since 2×421442310² = 355227241316272200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421442311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117282 + ... + 120821.

It is an arithmetic number, because the mean of its divisors is an integer number (32144040).

Almost surely, 2^421442310 is an apocalyptic number.

421442310 is an abundant number, since it is smaller than the sum of its proper divisors (607166970).

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

421442310 is a wasteful number, since it uses less digits than its factorization.

421442310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238172.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421442310 is about 20529.0601343559. The cubic root of 421442310 is about 749.7435034004.

Adding to 421442310 its reverse (13244124), we get a palindrome (434686434).

The spelling of 421442310 in words is "four hundred twenty-one million, four hundred forty-two thousand, three hundred ten".