740642 has 8 divisors (see below), whose sum is σ = 1269696. Its totient is φ = 317412.

The previous prime is 740603. The next prime is 740651. The reversal of 740642 is 246047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

740642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26438 + ... + 26465.

It is an arithmetic number, because the mean of its divisors is an integer number (158712).

2⁷⁴⁰⁶⁴² is an apocalyptic number.

740642 is a deficient number, since it is larger than the sum of its proper divisors (529054).

740642 is a wasteful number, since it uses less digits than its factorization.

740642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52912.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 740642 is about 860.6056007254. The cubic root of 740642 is about 90.4765666871.

Adding to 740642 its reverse (246047), we get a palindrome (986689).

The spelling of 740642 in words is "seven hundred forty thousand, six hundred forty-two".