420145008 has 20 divisors (see below), whose sum is σ = 1085374728. Its totient is φ = 140048320.

The previous prime is 420144997. The next prime is 420145009. The reversal of 420145008 is 800541024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420145009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4376463 + ... + 4376558.

Almost surely, 2^420145008 is an apocalyptic number.

420145008 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

420145008 is an abundant number, since it is smaller than the sum of its proper divisors (665229720).

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

420145008 is a wasteful number, since it uses less digits than its factorization.

420145008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8753032 (or 8753026 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 420145008 is about 20497.4390595508. The cubic root of 420145008 is about 748.9734150277.

The spelling of 420145008 in words is "four hundred twenty million, one hundred forty-five thousand, eight".