7974242 has 4 divisors (see below), whose sum is σ = 11961366. Its totient is φ = 3987120.

The previous prime is 7974233. The next prime is 7974251. The reversal of 7974242 is 2424797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2424797 = 67 ⋅36191.

It is an interprime number because it is at equal distance from previous prime (7974233) and next prime (7974251).

It can be written as a sum of positive squares in only one way, i.e., 6869641 + 1104601 = 2621^2 + 1051^2 .

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 as a sum of consecutive naturals, namely, 1993559 + ... + 1993562.

Almost surely, 2^7974242 is an apocalyptic number.

7974242 is a deficient number, since it is larger than the sum of its proper divisors (3987124).

7974242 is a wasteful number, since it uses less digits than its factorization.

7974242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987123.

The product of its digits is 28224, while the sum is 35.

The square root of 7974242 is about 2823.8700395025. The cubic root of 7974242 is about 199.7851192139.

The spelling of 7974242 in words is "seven million, nine hundred seventy-four thousand, two hundred forty-two".