7420723 has 4 divisors (see below), whose sum is σ = 7676640. Its totient is φ = 7164808.

The previous prime is 7420709. The next prime is 7420727. The reversal of 7420723 is 3270247.

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 7420723 - 2⁵ = 7420691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7420727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127915 + ... + 127972.

It is an arithmetic number, because the mean of its divisors is an integer number (1919160).

Almost surely, 2^7420723 is an apocalyptic number.

7420723 is a deficient number, since it is larger than the sum of its proper divisors (255917).

7420723 is a wasteful number, since it uses less digits than its factorization.

7420723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255916.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 7420723 is about 2724.1004019676. The cubic root of 7420723 is about 195.0512510477.

The spelling of 7420723 in words is "seven million, four hundred twenty thousand, seven hundred twenty-three".