740128 has 24 divisors (see below), whose sum is σ = 1477980. Its totient is φ = 364800.

The previous prime is 740123. The next prime is 740141. The reversal of 740128 is 821047.

740128 = T₆₇ + T₆₈ + ... + T₁₆₇.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 204304 = 732^2 + 452^2 .

It is a junction number, because it is equal to n+sod(n) for n = 740099 and 740108.

It is not an unprimeable number, because it can be changed into a prime (740123) 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, 3118 + ... + 3346.

2⁷⁴⁰¹²⁸ is an apocalyptic number.

It is an amenable number.

740128 is a deficient number, since it is larger than the sum of its proper divisors (737852).

740128 is a wasteful number, since it uses less digits than its factorization.

740128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 740128 is about 860.3069219761. The cubic root of 740128 is about 90.4556318236.

It can be divided in two parts, 740 and 128, that added together give a palindrome (868).

The spelling of 740128 in words is "seven hundred forty thousand, one hundred twenty-eight".