420532544 has 28 divisors (see below), whose sum is σ = 835336404. Its totient is φ = 210054144.

The previous prime is 420532523. The next prime is 420532549. The reversal of 420532544 is 445235024.

It can be written as a sum of positive squares in 2 ways, for example, as 25000000 + 395532544 = 5000^2 + 19888^2 .

It is a super-2 number, since 2×420532544² = 353695241126223872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420532549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74924 + ... + 80340.

It is an arithmetic number, because the mean of its divisors is an integer number (29833443).

Almost surely, 2^420532544 is an apocalyptic number.

It is an amenable number.

420532544 is a deficient number, since it is larger than the sum of its proper divisors (414803860).

420532544 is a wasteful number, since it uses less digits than its factorization.

420532544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6642 (or 6632 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 420532544 is about 20506.8901591636. The cubic root of 420532544 is about 749.2036252007.

Adding to 420532544 its reverse (445235024), we get a palindrome (865767568).

The spelling of 420532544 in words is "four hundred twenty million, five hundred thirty-two thousand, five hundred forty-four".