42312242021 has 16 divisors (see below), whose sum is σ = 51206981760. Its totient is φ = 34130503680.

The previous prime is 42312242003. The next prime is 42312242039. The reversal of 42312242021 is 12024221324.

It is an interprime number because it is at equal distance from previous prime (42312242003) and next prime (42312242039).

It is not a de Polignac number, because 42312242021 - 2³⁰ = 41238500197 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 (42312242081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720550 + ... + 1744968.

It is an arithmetic number, because the mean of its divisors is an integer number (3200436360).

Almost surely, 2^42312242021 is an apocalyptic number.

It is an amenable number.

42312242021 is a deficient number, since it is larger than the sum of its proper divisors (8894739739).

42312242021 is a wasteful number, since it uses less digits than its factorization.

42312242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39004.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42312242021 its reverse (12024221324), we get a palindrome (54336463345).

The spelling of 42312242021 in words is "forty-two billion, three hundred twelve million, two hundred forty-two thousand, twenty-one".