420453040 has 40 divisors (see below), whose sum is σ = 1117205280. Its totient is φ = 144155136.

The previous prime is 420453013. The next prime is 420453043. The reversal of 420453040 is 40354024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (420453043) 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, 374845 + ... + 375964.

It is an arithmetic number, because the mean of its divisors is an integer number (27930132).

Almost surely, 2^420453040 is an apocalyptic number.

420453040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420453040 is an abundant number, since it is smaller than the sum of its proper divisors (696752240).

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

420453040 is a wasteful number, since it uses less digits than its factorization.

420453040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750829 (or 750823 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 420453040 is about 20504.9515971143. The cubic root of 420453040 is about 749.1564085307.

The spelling of 420453040 in words is "four hundred twenty million, four hundred fifty-three thousand, forty".