420124031431 has 4 divisors (see below), whose sum is σ = 452441264632. Its totient is φ = 387806798232.

The previous prime is 420124031399. The next prime is 420124031471. The reversal of 420124031431 is 134130421024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420124031431 - 2⁵ = 420124031399 is a prime.

It is a super-2 number, since 2×420124031431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420124031396 and 420124031405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420124031471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16158616581 + ... + 16158616606.

It is an arithmetic number, because the mean of its divisors is an integer number (113110316158).

Almost surely, 2^420124031431 is an apocalyptic number.

420124031431 is a deficient number, since it is larger than the sum of its proper divisors (32317233201).

420124031431 is a wasteful number, since it uses less digits than its factorization.

420124031431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32317233200.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 420124031431 its reverse (134130421024), we get a palindrome (554254452455).

The spelling of 420124031431 in words is "four hundred twenty billion, one hundred twenty-four million, thirty-one thousand, four hundred thirty-one".