420612280 has 32 divisors (see below), whose sum is σ = 1032413040. Its totient is φ = 152949760.

The previous prime is 420612229. The next prime is 420612281. The reversal of 420612280 is 82216024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420612281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477529 + ... + 478408.

Almost surely, 2^420612280 is an apocalyptic number.

420612280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420612280 is an abundant number, since it is smaller than the sum of its proper divisors (611800760).

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

420612280 is a wasteful number, since it uses less digits than its factorization.

420612280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955959 (or 955955 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 420612280 is about 20508.8341940735. The cubic root of 420612280 is about 749.2509736766.

The spelling of 420612280 in words is "four hundred twenty million, six hundred twelve thousand, two hundred eighty".