420642044 has 6 divisors (see below), whose sum is σ = 736123584. Its totient is φ = 210321020.

The previous prime is 420642041. The next prime is 420642109. The reversal of 420642044 is 440246024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420642041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52580252 + ... + 52580259.

It is an arithmetic number, because the mean of its divisors is an integer number (122687264).

Almost surely, 2^420642044 is an apocalyptic number.

It is an amenable number.

420642044 is a deficient number, since it is larger than the sum of its proper divisors (315481540).

420642044 is a wasteful number, since it uses less digits than its factorization.

420642044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105160515 (or 105160513 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 420642044 is about 20509.5598197523. The cubic root of 420642044 is about 749.2686464686.

Adding to 420642044 its reverse (440246024), we get a palindrome (860888068).

The spelling of 420642044 in words is "four hundred twenty million, six hundred forty-two thousand, forty-four".