7879542 has 32 divisors (see below), whose sum is σ = 17293824. Its totient is φ = 2373600.

The previous prime is 7879541. The next prime is 7879559. The reversal of 7879542 is 2459787.

It is a d-powerful number, because it can be written as 7⁵ + 8³ + 7⁸ + 9 + 5 + 4⁴ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 7879494 and 7879503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18067 + ... + 18497.

It is an arithmetic number, because the mean of its divisors is an integer number (540432).

Almost surely, 2^7879542 is an apocalyptic number.

7879542 is an abundant number, since it is smaller than the sum of its proper divisors (9414282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7879542 is a wasteful number, since it uses less digits than its factorization.

7879542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its digits is 141120, while the sum is 42.

The square root of 7879542 is about 2807.0521904660. The cubic root of 7879542 is about 198.9911025205.

The spelling of 7879542 in words is "seven million, eight hundred seventy-nine thousand, five hundred forty-two".