7920023 has 4 divisors (see below), whose sum is σ = 7929840. Its totient is φ = 7910208.

The previous prime is 7920019. The next prime is 7920043. The reversal of 7920023 is 3200297.

7920023 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7920023 - 2² = 7920019 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7920043) 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, 3578 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (1982460).

Almost surely, 2^7920023 is an apocalyptic number.

7920023 is a deficient number, since it is larger than the sum of its proper divisors (9817).

7920023 is an equidigital number, since it uses as much as digits as its factorization.

7920023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9816.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 7920023 is about 2814.2535422382. The cubic root of 7920023 is about 199.3312916375.

It can be divided in two parts, 79 and 20023, that added together give a palindrome (20102).

The spelling of 7920023 in words is "seven million, nine hundred twenty thousand, twenty-three".