42121422131 has 8 divisors (see below), whose sum is σ = 42932064960. Its totient is φ = 41314003432.

The previous prime is 42121422097. The next prime is 42121422139. The reversal of 42121422131 is 13122412124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42121422131 - 2²² = 42117227827 is a prime.

It is a super-2 number, since 2×42121422131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42121422097 and 42121422106.

It is not an unprimeable number, because it can be changed into a prime (42121422139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779645 + ... + 831918.

It is an arithmetic number, because the mean of its divisors is an integer number (5366508120).

Almost surely, 2^42121422131 is an apocalyptic number.

42121422131 is a deficient number, since it is larger than the sum of its proper divisors (810642829).

42121422131 is a wasteful number, since it uses less digits than its factorization.

42121422131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612065.

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

Adding to 42121422131 its reverse (13122412124), we get a palindrome (55243834255).

The spelling of 42121422131 in words is "forty-two billion, one hundred twenty-one million, four hundred twenty-two thousand, one hundred thirty-one".