420402142244 has 36 divisors (see below), whose sum is σ = 855916056576. Its totient is φ = 180151839504.

The previous prime is 420402142219. The next prime is 420402142249. The reversal of 420402142244 is 442241204024.

It is a happy number.

It is a super-2 number, since 2×420402142244² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420402142249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1671389 + ... + 1906395.

It is an arithmetic number, because the mean of its divisors is an integer number (23775446016).

Almost surely, 2^420402142244 is an apocalyptic number.

It is an amenable number.

420402142244 is an abundant number, since it is smaller than the sum of its proper divisors (435513914332).

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

420402142244 is a wasteful number, since it uses less digits than its factorization.

420402142244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244152 (or 244143 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

Adding to 420402142244 its reverse (442241204024), we get a palindrome (862643346268).

The spelling of 420402142244 in words is "four hundred twenty billion, four hundred two million, one hundred forty-two thousand, two hundred forty-four".