7240023 has 30 divisors (see below), whose sum is σ = 12470744. Its totient is φ = 4100544.

The previous prime is 7240001. The next prime is 7240031. The reversal of 7240023 is 3200427.

It is a happy number.

It is not a de Polignac number, because 7240023 - 2¹⁰ = 7238999 is a prime.

It is a Duffinian number.

7240023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7239978 and 7240005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7240033) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 64015 + ... + 64127.

Almost surely, 2^7240023 is an apocalyptic number.

7240023 is a deficient number, since it is larger than the sum of its proper divisors (5230721).

7240023 is an equidigital number, since it uses as much as digits as its factorization.

7240023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 7240023 is about 2690.7290833527. The cubic root of 7240023 is about 193.4550102724.

The spelling of 7240023 in words is "seven million, two hundred forty thousand, twenty-three".