9420762087421 has 4 divisors (see below), whose sum is σ = 9830360439072. Its totient is φ = 9011163735772.

The previous prime is 9420762087413. The next prime is 9420762087449. The reversal of 9420762087421 is 1247802670249.

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 not a de Polignac number, because 9420762087421 - 2³ = 9420762087413 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 (9420762087491) 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, 204799175791 + ... + 204799175836.

It is an arithmetic number, because the mean of its divisors is an integer number (2457590109768).

Almost surely, 2^{9420762087421} is an apocalyptic number.

It is an amenable number.

9420762087421 is a deficient number, since it is larger than the sum of its proper divisors (409598351651).

9420762087421 is a wasteful number, since it uses less digits than its factorization.

9420762087421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409598351650.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 9420762087421 in words is "nine trillion, four hundred twenty billion, seven hundred sixty-two million, eighty-seven thousand, four hundred twenty-one".