7942306 has 4 divisors (see below), whose sum is σ = 11913462. Its totient is φ = 3971152.

The previous prime is 7942303. The next prime is 7942307. The reversal of 7942306 is 6032497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6032497 = 47 ⋅128351.

It can be written as a sum of positive squares in only one way, i.e., 5103081 + 2839225 = 2259^2 + 1685^2 .

It is a Smith number, since the sum of its digits (31) 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 (7942303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985575 + ... + 1985578.

Almost surely, 2^7942306 is an apocalyptic number.

7942306 is a deficient number, since it is larger than the sum of its proper divisors (3971156).

7942306 is a wasteful number, since it uses less digits than its factorization.

7942306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971155.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 7942306 is about 2818.2097154044. The cubic root of 7942306 is about 199.5180562506.

The spelling of 7942306 in words is "seven million, nine hundred forty-two thousand, three hundred six".