42142220130431 has 2 divisors, whose sum is σ = 42142220130432. Its totient is φ = 42142220130430.

The previous prime is 42142220130421. The next prime is 42142220130449. The reversal of 42142220130431 is 13403102224124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42142220130431 is a prime.

It is a super-2 number, since 2×42142220130431² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42142220130394 and 42142220130403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42142220130421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21071110065215 + 21071110065216.

It is an arithmetic number, because the mean of its divisors is an integer number (21071110065216).

Almost surely, 2^{42142220130431} is an apocalyptic number.

42142220130431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42142220130431 is an equidigital number, since it uses as much as digits as its factorization.

42142220130431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 42142220130431 its reverse (13403102224124), we get a palindrome (55545322354555).

The spelling of 42142220130431 in words is "forty-two trillion, one hundred forty-two billion, two hundred twenty million, one hundred thirty thousand, four hundred thirty-one".