420534444 has 24 divisors (see below), whose sum is σ = 1070451648. Its totient is φ = 127434640.

The previous prime is 420534397. The next prime is 420534463. The reversal of 420534444 is 444435024.

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, 1592802 + ... + 1593065.

It is an arithmetic number, because the mean of its divisors is an integer number (44602152).

Almost surely, 2^420534444 is an apocalyptic number.

420534444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

420534444 is an abundant number, since it is smaller than the sum of its proper divisors (649917204).

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

420534444 is a wasteful number, since it uses less digits than its factorization.

420534444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185885 (or 3185883 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

The square root of 420534444 is about 20506.9364850043. The cubic root of 420534444 is about 749.2047535199.

Adding to 420534444 its reverse (444435024), we get a palindrome (864969468).

The spelling of 420534444 in words is "four hundred twenty million, five hundred thirty-four thousand, four hundred forty-four".