7745442 has 8 divisors (see below), whose sum is σ = 15490896. Its totient is φ = 2581812.

The previous prime is 7745429. The next prime is 7745447. The reversal of 7745442 is 2445477.

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

7745442 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7745447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645448 + ... + 645459.

It is an arithmetic number, because the mean of its divisors is an integer number (1936362).

Almost surely, 2^7745442 is an apocalyptic number.

7745442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7745442 is a wasteful number, since it uses less digits than its factorization.

7745442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290912.

The product of its digits is 31360, while the sum is 33.

The square root of 7745442 is about 2783.0634200463. The cubic root of 7745442 is about 197.8557770265.

It can be divided in two parts, 774 and 5442, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 7745442 in words is "seven million, seven hundred forty-five thousand, four hundred forty-two".