7879742 has 16 divisors (see below), whose sum is σ = 13074432. Its totient is φ = 3538080.

The previous prime is 7879741. The next prime is 7879747. The reversal of 7879742 is 2479787.

It is a junction number, because it is equal to n+sod(n) for n = 7879693 and 7879702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879741) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3134 + ... + 5057.

It is an arithmetic number, because the mean of its divisors is an integer number (817152).

Almost surely, 2^7879742 is an apocalyptic number.

7879742 is a deficient number, since it is larger than the sum of its proper divisors (5194690).

7879742 is a wasteful number, since it uses less digits than its factorization.

7879742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8243.

The product of its digits is 197568, while the sum is 44.

The square root of 7879742 is about 2807.0878148002. The cubic root of 7879742 is about 198.9927861159.

The spelling of 7879742 in words is "seven million, eight hundred seventy-nine thousand, seven hundred forty-two".