42022313421 has 16 divisors (see below), whose sum is σ = 61187954688. Its totient is φ = 25441156400.

The previous prime is 42022313383. The next prime is 42022313441. The reversal of 42022313421 is 12431322024.

It is a happy number.

It is not a de Polignac number, because 42022313421 - 2⁷ = 42022313293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42022313391 and 42022313400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42022313441) 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, 641085 + ... + 703586.

It is an arithmetic number, because the mean of its divisors is an integer number (3824247168).

Almost surely, 2^42022313421 is an apocalyptic number.

It is an amenable number.

42022313421 is a deficient number, since it is larger than the sum of its proper divisors (19165641267).

42022313421 is a wasteful number, since it uses less digits than its factorization.

42022313421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345632.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 42022313421 its reverse (12431322024), we get a palindrome (54453635445).

The spelling of 42022313421 in words is "forty-two billion, twenty-two million, three hundred thirteen thousand, four hundred twenty-one".