421110440 has 32 divisors (see below), whose sum is σ = 965380680. Its totient is φ = 165265152.

The previous prime is 421110439. The next prime is 421110533. The reversal of 421110440 is 44011124.

It can be written as a sum of positive squares in 4 ways, for example, as 394340164 + 26770276 = 19858^2 + 5174^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97199 + ... + 101438.

Almost surely, 2^421110440 is an apocalyptic number.

421110440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421110440 is an abundant number, since it is smaller than the sum of its proper divisors (544270240).

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

421110440 is a wasteful number, since it uses less digits than its factorization.

421110440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198701 (or 198697 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 421110440 is about 20520.9756103359. The cubic root of 421110440 is about 749.5466534318.

Adding to 421110440 its reverse (44011124), we get a palindrome (465121564).

The spelling of 421110440 in words is "four hundred twenty-one million, one hundred ten thousand, four hundred forty".