7645042 has 8 divisors (see below), whose sum is σ = 11573100. Its totient is φ = 3787344.

The previous prime is 7645007. The next prime is 7645061. The reversal of 7645042 is 2405467.

It can be written as a sum of positive squares in 2 ways, for example, as 6255001 + 1390041 = 2501^2 + 1179^2 .

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 7645042.

It is an unprimeable number.

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, 17317 + ... + 17752.

Almost surely, 2^7645042 is an apocalyptic number.

7645042 is a deficient number, since it is larger than the sum of its proper divisors (3928058).

7645042 is a wasteful number, since it uses less digits than its factorization.

7645042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35180.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 7645042 is about 2764.9669075777. The cubic root of 7645042 is about 196.9971569758.

The spelling of 7645042 in words is "seven million, six hundred forty-five thousand, forty-two".