42231432121 has 8 divisors (see below), whose sum is σ = 42275695680. Its totient is φ = 42187194192.

The previous prime is 42231432101. The next prime is 42231432227. The reversal of 42231432121 is 12123413224.

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 42231432121 - 2²¹ = 42229334969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42231432101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5356060 + ... + 5363938.

It is an arithmetic number, because the mean of its divisors is an integer number (5284461960).

Almost surely, 2^42231432121 is an apocalyptic number.

It is an amenable number.

42231432121 is a deficient number, since it is larger than the sum of its proper divisors (44263559).

42231432121 is a wasteful number, since it uses less digits than its factorization.

42231432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815.

The product of its digits is 2304, while the sum is 25.

Adding to 42231432121 its reverse (12123413224), we get a palindrome (54354845345).

The spelling of 42231432121 in words is "forty-two billion, two hundred thirty-one million, four hundred thirty-two thousand, one hundred twenty-one".