42110121431 has 4 divisors (see below), whose sum is σ = 48125853072. Its totient is φ = 36094389792.

The previous prime is 42110121421. The next prime is 42110121517. The reversal of 42110121431 is 13412101124.

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 42110121431 - 2³⁴ = 24930252247 is a prime.

It is a super-2 number, since 2×42110121431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42110121421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3007865810 + ... + 3007865823.

It is an arithmetic number, because the mean of its divisors is an integer number (12031463268).

Almost surely, 2^42110121431 is an apocalyptic number.

42110121431 is a deficient number, since it is larger than the sum of its proper divisors (6015731641).

42110121431 is an equidigital number, since it uses as much as digits as its factorization.

42110121431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015731640.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 42110121431 its reverse (13412101124), we get a palindrome (55522222555).

The spelling of 42110121431 in words is "forty-two billion, one hundred ten million, one hundred twenty-one thousand, four hundred thirty-one".