424144032021 has 16 divisors (see below), whose sum is σ = 629138275200. Its totient is φ = 282413152224.

The previous prime is 424144032007. The next prime is 424144032043. The reversal of 424144032021 is 120230441424.

424144032021 is a `hidden beast` number, since 4 + 2 + 414 + 40 + 3 + 202 + 1 = 666.

It is not a de Polignac number, because 424144032021 - 2⁵ = 424144031989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424144032001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9687081 + ... + 9730766.

It is an arithmetic number, because the mean of its divisors is an integer number (39321142200).

Almost surely, 2^424144032021 is an apocalyptic number.

It is an amenable number.

424144032021 is a deficient number, since it is larger than the sum of its proper divisors (204994243179).

424144032021 is a wasteful number, since it uses less digits than its factorization.

424144032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19418665 (or 19418659 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 424144032021 its reverse (120230441424), we get a palindrome (544374473445).

The spelling of 424144032021 in words is "four hundred twenty-four billion, one hundred forty-four million, thirty-two thousand, twenty-one".