42422092421 has 4 divisors (see below), whose sum is σ = 43456777644. Its totient is φ = 41387407200.

The previous prime is 42422092409. The next prime is 42422092483. The reversal of 42422092421 is 12429022424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7053648196 + 35368444225 = 83986^2 + 188065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42422092421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42422092121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517342550 + ... + 517342631.

It is an arithmetic number, because the mean of its divisors is an integer number (10864194411).

Almost surely, 2^42422092421 is an apocalyptic number.

42422092421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42422092421 is a deficient number, since it is larger than the sum of its proper divisors (1034685223).

42422092421 is a wasteful number, since it uses less digits than its factorization.

42422092421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034685222.

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 42422092421 in words is "forty-two billion, four hundred twenty-two million, ninety-two thousand, four hundred twenty-one".