420520460 has 24 divisors (see below), whose sum is σ = 890912736. Its totient is φ = 166718720.

The previous prime is 420520423. The next prime is 420520489. The reversal of 420520460 is 64025024.

It is a super-2 number, since 2×420520460² = 353674914557223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90776 + ... + 95295.

It is an arithmetic number, because the mean of its divisors is an integer number (37121364).

Almost surely, 2^420520460 is an apocalyptic number.

It is an amenable number.

420520460 is an abundant number, since it is smaller than the sum of its proper divisors (470392276).

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

420520460 is a wasteful number, since it uses less digits than its factorization.

420520460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186193 (or 186191 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 420520460 is about 20506.5955243673. The cubic root of 420520460 is about 749.1964490115.

Adding to 420520460 its reverse (64025024), we get a palindrome (484545484).

The spelling of 420520460 in words is "four hundred twenty million, five hundred twenty thousand, four hundred sixty".