10421245431 has 20 divisors (see below), whose sum is σ = 15646586472. Its totient is φ = 6912219888.

The previous prime is 10421245399. The next prime is 10421245433. The reversal of 10421245431 is 13454212401.

10421245431 is a `hidden beast` number, since 10 + 4 + 212 + 4 + 5 + 431 = 666.

It is not a de Polignac number, because 10421245431 - 2⁵ = 10421245399 is a prime.

It is a super-2 number, since 2×10421245431² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 10421245395 and 10421245404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421245433) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 310585 + ... + 342498.

Almost surely, 2^10421245431 is an apocalyptic number.

10421245431 is a deficient number, since it is larger than the sum of its proper divisors (5225341041).

10421245431 is an equidigital number, since it uses as much as digits as its factorization.

10421245431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653292 (or 653283 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 10421245431 its reverse (13454212401), we get a palindrome (23875457832).

The spelling of 10421245431 in words is "ten billion, four hundred twenty-one million, two hundred forty-five thousand, four hundred thirty-one".