420837540 has 48 divisors (see below), whose sum is σ = 1179541440. Its totient is φ = 112109440.

The previous prime is 420837539. The next prime is 420837541. The reversal of 420837540 is 45738024.

It is an interprime number because it is at equal distance from previous prime (420837539) and next prime (420837541).

It is not an unprimeable number, because it can be changed into a prime (420837541) 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, 67891 + ... + 73829.

It is an arithmetic number, because the mean of its divisors is an integer number (24573780).

Almost surely, 2^420837540 is an apocalyptic number.

It is an amenable number.

420837540 is an abundant number, since it is smaller than the sum of its proper divisors (758703900).

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

420837540 is a wasteful number, since it uses less digits than its factorization.

420837540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7132 (or 7130 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 420837540 is about 20514.3252387204. The cubic root of 420837540 is about 749.3847042418.

The spelling of 420837540 in words is "four hundred twenty million, eight hundred thirty-seven thousand, five hundred forty".