421876755 has 20 divisors (see below), whose sum is σ = 756253872. Its totient is φ = 225000720.

The previous prime is 421876753. The next prime is 421876769. The reversal of 421876755 is 557678124.

It is not a de Polignac number, because 421876755 - 2¹ = 421876753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 421876755.

It is not an unprimeable number, because it can be changed into a prime (421876751) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 520431 + ... + 521240.

Almost surely, 2^421876755 is an apocalyptic number.

421876755 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

421876755 is a deficient number, since it is larger than the sum of its proper divisors (334377117).

421876755 is a wasteful number, since it uses less digits than its factorization.

421876755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041688 (or 1041679 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 421876755 is about 20539.6386287588. The cubic root of 421876755 is about 750.0010399986.

The spelling of 421876755 in words is "four hundred twenty-one million, eight hundred seventy-six thousand, seven hundred fifty-five".