42110434121 has 4 divisors (see below), whose sum is σ = 48126210432. Its totient is φ = 36094657812.

The previous prime is 42110434111. The next prime is 42110434127. The reversal of 42110434121 is 12143401124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42110434121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42110434127) 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, 3007888145 + ... + 3007888158.

It is an arithmetic number, because the mean of its divisors is an integer number (12031552608).

Almost surely, 2^42110434121 is an apocalyptic number.

It is an amenable number.

42110434121 is a deficient number, since it is larger than the sum of its proper divisors (6015776311).

42110434121 is an equidigital number, since it uses as much as digits as its factorization.

42110434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6015776310.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 42110434121 its reverse (12143401124), we get a palindrome (54253835245).

The spelling of 42110434121 in words is "forty-two billion, one hundred ten million, four hundred thirty-four thousand, one hundred twenty-one".