42110134021 has 16 divisors (see below), whose sum is σ = 43237204864. Its totient is φ = 40998887424.

The previous prime is 42110134013. The next prime is 42110134063. The reversal of 42110134021 is 12043101124.

It is a cyclic number.

It is not a de Polignac number, because 42110134021 - 2³ = 42110134013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42110134021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42110134091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5344741 + ... + 5352613.

It is an arithmetic number, because the mean of its divisors is an integer number (2702325304).

Almost surely, 2^42110134021 is an apocalyptic number.

It is an amenable number.

42110134021 is a deficient number, since it is larger than the sum of its proper divisors (1127070843).

42110134021 is an equidigital number, since it uses as much as digits as its factorization.

42110134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8860.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 42110134021 its reverse (12043101124), we get a palindrome (54153235145).

The spelling of 42110134021 in words is "forty-two billion, one hundred ten million, one hundred thirty-four thousand, twenty-one".