421105508 has 6 divisors (see below), whose sum is σ = 736934646. Its totient is φ = 210552752.

The previous prime is 421105499. The next prime is 421105513. The reversal of 421105508 is 805501124.

It can be written as a sum of positive squares in only one way, i.e., 386436964 + 34668544 = 19658^2 + 5888^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52638185 + ... + 52638192.

It is an arithmetic number, because the mean of its divisors is an integer number (122822441).

Almost surely, 2^421105508 is an apocalyptic number.

It is an amenable number.

421105508 is a deficient number, since it is larger than the sum of its proper divisors (315829138).

421105508 is a wasteful number, since it uses less digits than its factorization.

421105508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105276381 (or 105276379 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 421105508 is about 20520.8554402588. The cubic root of 421105508 is about 749.5437272172.

The spelling of 421105508 in words is "four hundred twenty-one million, one hundred five thousand, five hundred eight".