42311024421 has 4 divisors (see below), whose sum is σ = 56414699232. Its totient is φ = 28207349612.

The previous prime is 42311024407. The next prime is 42311024449. The reversal of 42311024421 is 12442011324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42311024421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42311024391 and 42311024400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311024491) 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, 7051837401 + ... + 7051837406.

It is an arithmetic number, because the mean of its divisors is an integer number (14103674808).

Almost surely, 2^42311024421 is an apocalyptic number.

It is an amenable number.

42311024421 is a deficient number, since it is larger than the sum of its proper divisors (14103674811).

42311024421 is a wasteful number, since it uses less digits than its factorization.

42311024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103674810.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 42311024421 its reverse (12442011324), we get a palindrome (54753035745).

The spelling of 42311024421 in words is "forty-two billion, three hundred eleven million, twenty-four thousand, four hundred twenty-one".