42121432412131 has 8 divisors (see below), whose sum is σ = 42445873285200. Its totient is φ = 41797035527520.

The previous prime is 42121432412083. The next prime is 42121432412149. The reversal of 42121432412131 is 13121423412124.

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 42121432412131 - 2²¹ = 42121430314979 is a prime.

It is a super-2 number, since 2×42121432412131² (a number of 28 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 = 42121432412093 and 42121432412102.

It is not an unprimeable number, because it can be changed into a prime (42121432412831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9073336 + ... + 12906133.

It is an arithmetic number, because the mean of its divisors is an integer number (5305734160650).

Almost surely, 2^{42121432412131} is an apocalyptic number.

42121432412131 is a deficient number, since it is larger than the sum of its proper divisors (324440873069).

42121432412131 is a wasteful number, since it uses less digits than its factorization.

42121432412131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21994229.

The product of its digits is 9216, while the sum is 31.

Adding to 42121432412131 its reverse (13121423412124), we get a palindrome (55242855824255).

The spelling of 42121432412131 in words is "forty-two trillion, one hundred twenty-one billion, four hundred thirty-two million, four hundred twelve thousand, one hundred thirty-one".