42310021421 has 8 divisors (see below), whose sum is σ = 42728322624. Its totient is φ = 41891865120.

The previous prime is 42310021417. The next prime is 42310021469. The reversal of 42310021421 is 12412001324.

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

It is a cyclic number.

It is not a de Polignac number, because 42310021421 - 2² = 42310021417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42310021393 and 42310021402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42310021471) 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, 606665 + ... + 672801.

It is an arithmetic number, because the mean of its divisors is an integer number (5341040328).

Almost surely, 2^42310021421 is an apocalyptic number.

It is an amenable number.

42310021421 is a deficient number, since it is larger than the sum of its proper divisors (418301203).

42310021421 is a wasteful number, since it uses less digits than its factorization.

42310021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72451.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42310021421 its reverse (12412001324), we get a palindrome (54722022745).

The spelling of 42310021421 in words is "forty-two billion, three hundred ten million, twenty-one thousand, four hundred twenty-one".