420280530 has 16 divisors (see below), whose sum is σ = 1008673344. Its totient is φ = 112074800.

The previous prime is 420280457. The next prime is 420280537. The reversal of 420280530 is 35082024.

It is a self number, because there is not a number n which added to its sum of digits gives 420280530.

It is not an unprimeable number, because it can be changed into a prime (420280537) 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, 7004646 + ... + 7004705.

It is an arithmetic number, because the mean of its divisors is an integer number (63042084).

Almost surely, 2^420280530 is an apocalyptic number.

420280530 is an abundant number, since it is smaller than the sum of its proper divisors (588392814).

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

420280530 is a wasteful number, since it uses less digits than its factorization.

420280530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14009361.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 420280530 is about 20500.7446206229. The cubic root of 420280530 is about 749.0539360079.

The spelling of 420280530 in words is "four hundred twenty million, two hundred eighty thousand, five hundred thirty".