424042031421 has 8 divisors (see below), whose sum is σ = 628210416960. Its totient is φ = 282694687596.

The previous prime is 424042031393. The next prime is 424042031431. The reversal of 424042031421 is 124130240424.

424042031421 is a `hidden beast` number, since 42 + 404 + 203 + 14 + 2 + 1 = 666.

It is not a de Polignac number, because 424042031421 - 2¹⁰ = 424042030397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15705260423 = 424042031421 / (4 + 2 + 4 + 0 + 4 + 2 + 0 + 3 + 1 + 4 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424042031431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7852630185 + ... + 7852630238.

It is an arithmetic number, because the mean of its divisors is an integer number (78526302120).

Almost surely, 2^424042031421 is an apocalyptic number.

It is an amenable number.

424042031421 is a deficient number, since it is larger than the sum of its proper divisors (204168385539).

424042031421 is a wasteful number, since it uses less digits than its factorization.

424042031421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15705260432 (or 15705260426 counting only the distinct ones).

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

Adding to 424042031421 its reverse (124130240424), we get a palindrome (548172271845).

The spelling of 424042031421 in words is "four hundred twenty-four billion, forty-two million, thirty-one thousand, four hundred twenty-one".