740423 has 2 divisors, whose sum is σ = 740424. Its totient is φ = 740422.

The previous prime is 740387. The next prime is 740429. The reversal of 740423 is 324047.

It is a happy number.

740423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 740423 - 2⁶ = 740359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 740395 and 740404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (740429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370211 + 370212.

It is an arithmetic number, because the mean of its divisors is an integer number (370212).

2⁷⁴⁰⁴²³ is an apocalyptic number.

740423 is a deficient number, since it is larger than the sum of its proper divisors (1).

740423 is an equidigital number, since it uses as much as digits as its factorization.

740423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 740423 is about 860.4783553350. The cubic root of 740423 is about 90.4676481536.

The spelling of 740423 in words is "seven hundred forty thousand, four hundred twenty-three", and thus it is an iban number.