7880242 has 4 divisors (see below), whose sum is σ = 11820366. Its totient is φ = 3940120.

The previous prime is 7880239. The next prime is 7880251. The reversal of 7880242 is 2420887.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7017201 + 863041 = 2649^2 + 929^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1970059 + ... + 1970062.

Almost surely, 2^7880242 is an apocalyptic number.

7880242 is a deficient number, since it is larger than the sum of its proper divisors (3940124).

7880242 is a wasteful number, since it uses less digits than its factorization.

7880242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940123.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 7880242 is about 2807.1768736579. The cubic root of 7880242 is about 198.9969949800.

The spelling of 7880242 in words is "seven million, eight hundred eighty thousand, two hundred forty-two".