740427 has 4 divisors (see below), whose sum is σ = 987240. Its totient is φ = 493616.

The previous prime is 740423. The next prime is 740429. The reversal of 740427 is 724047.

740427 is nontrivially palindromic in base 16.

740427 is digitally balanced in base 2, 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 740427 - 2² = 740423 is a prime.

It is a D-number.

740427 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 740397 and 740406.

It is not an unprimeable number, because it can be changed into a prime (740423) 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, 123402 + ... + 123407.

It is an arithmetic number, because the mean of its divisors is an integer number (246810).

2⁷⁴⁰⁴²⁷ is an apocalyptic number.

740427 is a deficient number, since it is larger than the sum of its proper divisors (246813).

740427 is a wasteful number, since it uses less digits than its factorization.

740427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246812.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 740427 is about 860.4806796204. The cubic root of 740427 is about 90.4678110650.

The spelling of 740427 in words is "seven hundred forty thousand, four hundred twenty-seven", and thus it is an iban number.