740023 has 2 divisors, whose sum is σ = 740024. Its totient is φ = 740022.

The previous prime is 740021. The next prime is 740041. The reversal of 740023 is 320047.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 740023 - 2¹ = 740021 is a prime.

Together with 740021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 739979 and 740006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370011 + 370012.

It is an arithmetic number, because the mean of its divisors is an integer number (370012).

2⁷⁴⁰⁰²³ is an apocalyptic number.

740023 is a deficient number, since it is larger than the sum of its proper divisors (1).

740023 is an equidigital number, since it uses as much as digits as its factorization.

740023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 740023 is about 860.2458950788. The cubic root of 740023 is about 90.4513540543.

The spelling of 740023 in words is "seven hundred forty thousand, twenty-three", and thus it is an iban number.