7740442 has 8 divisors (see below), whose sum is σ = 11629332. Its totient is φ = 3864000.

The previous prime is 7740433. The next prime is 7740451. The reversal of 7740442 is 2440477.

It is an interprime number because it is at equal distance from previous prime (7740433) and next prime (7740451).

It can be written as a sum of positive squares in 2 ways, for example, as 7678441 + 62001 = 2771^2 + 249^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 7740442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1359 + ... + 4162.

Almost surely, 2^7740442 is an apocalyptic number.

7740442 is a deficient number, since it is larger than the sum of its proper divisors (3888890).

7740442 is a wasteful number, since it uses less digits than its factorization.

7740442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6224.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 7740442 is about 2782.1649843243. The cubic root of 7740442 is about 197.8131931931.

The spelling of 7740442 in words is "seven million, seven hundred forty thousand, four hundred forty-two".