7779242 has 4 divisors (see below), whose sum is σ = 11668866. Its totient is φ = 3889620.

The previous prime is 7779241. The next prime is 7779253. The reversal of 7779242 is 2429777.

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., 4713241 + 3066001 = 2171^2 + 1751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7779196 and 7779205.

It is not an unprimeable number, because it can be changed into a prime (7779241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944809 + ... + 1944812.

Almost surely, 2^7779242 is an apocalyptic number.

7779242 is a deficient number, since it is larger than the sum of its proper divisors (3889624).

7779242 is a wasteful number, since it uses less digits than its factorization.

7779242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889623.

The product of its digits is 49392, while the sum is 38.

The square root of 7779242 is about 2789.1292548034. The cubic root of 7779242 is about 198.1431641538.

The spelling of 7779242 in words is "seven million, seven hundred seventy-nine thousand, two hundred forty-two".