420040344 has 32 divisors (see below), whose sum is σ = 1050603120. Its totient is φ = 139946496.

The previous prime is 420040333. The next prime is 420040399. The reversal of 420040344 is 443040024.

It is a self number, because there is not a number n which added to its sum of digits gives 420040344.

It is a congruent number.

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, 95604 + ... + 99900.

Almost surely, 2^420040344 is an apocalyptic number.

It is an amenable number.

420040344 is an abundant number, since it is smaller than the sum of its proper divisors (630562776).

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

420040344 is a wasteful number, since it uses less digits than its factorization.

420040344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8379 (or 8375 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420040344 is about 20494.8858010968. The cubic root of 420040344 is about 748.9112166103.

Adding to 420040344 its reverse (443040024), we get a palindrome (863080368).

It can be divided in two parts, 4200 and 40344, that added together give a palindrome (44544).

The spelling of 420040344 in words is "four hundred twenty million, forty thousand, three hundred forty-four".