42404112121 has 8 divisors (see below), whose sum is σ = 48470149440. Its totient is φ = 36340151568.

The previous prime is 42404112109. The next prime is 42404112133. The reversal of 42404112121 is 12121140424.

It is an interprime number because it is at equal distance from previous prime (42404112109) and next prime (42404112133).

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

It is not a de Polignac number, because 42404112121 - 2⁹ = 42404111609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42404112092 and 42404112101.

It is not an unprimeable number, because it can be changed into a prime (42404112721) 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, 475186 + ... + 557323.

It is an arithmetic number, because the mean of its divisors is an integer number (6058768680).

Almost surely, 2^42404112121 is an apocalyptic number.

It is an amenable number.

42404112121 is a deficient number, since it is larger than the sum of its proper divisors (6066037319).

42404112121 is a wasteful number, since it uses less digits than its factorization.

42404112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038383.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 42404112121 its reverse (12121140424), we get a palindrome (54525252545).

The spelling of 42404112121 in words is "forty-two billion, four hundred four million, one hundred twelve thousand, one hundred twenty-one".