420544964 has 24 divisors (see below), whose sum is σ = 841700160. Its totient is φ = 180102816.

The previous prime is 420544961. The next prime is 420544991. The reversal of 420544964 is 469445024.

It is a super-2 number, since 2×420544964² = 353716133491522592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420544961) 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, 40694 + ... + 49970.

It is an arithmetic number, because the mean of its divisors is an integer number (35070840).

Almost surely, 2^420544964 is an apocalyptic number.

It is an amenable number.

420544964 is an abundant number, since it is smaller than the sum of its proper divisors (421155196).

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

420544964 is a wasteful number, since it uses less digits than its factorization.

420544964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10907 (or 10905 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 420544964 is about 20507.1929819759. The cubic root of 420544964 is about 749.2110007832.

Adding to 420544964 its reverse (469445024), we get a palindrome (889989988).

The spelling of 420544964 in words is "four hundred twenty million, five hundred forty-four thousand, nine hundred sixty-four".