420039822 has 16 divisors (see below), whose sum is σ = 844723152. Its totient is φ = 139239360.

The previous prime is 420039797. The next prime is 420039853. The reversal of 420039822 is 228930024.

It is a self number, because there is not a number n which added to its sum of digits gives 420039822.

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, 192303 + ... + 194474.

It is an arithmetic number, because the mean of its divisors is an integer number (52795197).

Almost surely, 2^420039822 is an apocalyptic number.

420039822 is an abundant number, since it is smaller than the sum of its proper divisors (424683330).

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

420039822 is a wasteful number, since it uses less digits than its factorization.

420039822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386963.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 420039822 is about 20494.8730662085. The cubic root of 420039822 is about 748.9109063767.

Adding to 420039822 its reverse (228930024), we get a palindrome (648969846).

The spelling of 420039822 in words is "four hundred twenty million, thirty-nine thousand, eight hundred twenty-two".