420875055 has 16 divisors (see below), whose sum is σ = 748222560. Its totient is φ = 224466624.

The previous prime is 420875047. The next prime is 420875071. The reversal of 420875055 is 550578024.

It is a happy number.

It is not a de Polignac number, because 420875055 - 2³ = 420875047 is a prime.

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, 1558662 + ... + 1558931.

It is an arithmetic number, because the mean of its divisors is an integer number (46763910).

Almost surely, 2^420875055 is an apocalyptic number.

420875055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420875055 is a deficient number, since it is larger than the sum of its proper divisors (327347505).

420875055 is a wasteful number, since it uses less digits than its factorization.

420875055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117607 (or 3117601 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 420875055 is about 20515.2395793956. The cubic root of 420875055 is about 749.4069712127.

The spelling of 420875055 in words is "four hundred twenty million, eight hundred seventy-five thousand, fifty-five".