420546540 has 48 divisors (see below), whose sum is σ = 1185458400. Its totient is φ = 111390720.

The previous prime is 420546523. The next prime is 420546547. The reversal of 420546540 is 45645024.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 420546498 and 420546507.

It is not an unprimeable number, because it can be changed into a prime (420546547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14581 + ... + 32460.

It is an arithmetic number, because the mean of its divisors is an integer number (24697050).

Almost surely, 2^420546540 is an apocalyptic number.

It is an amenable number.

420546540 is an abundant number, since it is smaller than the sum of its proper divisors (764911860).

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

420546540 is a wasteful number, since it uses less digits than its factorization.

420546540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47202 (or 47200 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 420546540 is about 20507.2314074816. The cubic root of 420546540 is about 749.2119366761.

The spelling of 420546540 in words is "four hundred twenty million, five hundred forty-six thousand, five hundred forty".