7239042 has 48 divisors (see below), whose sum is σ = 17041752. Its totient is φ = 2211840.

The previous prime is 7239041. The next prime is 7239047. The reversal of 7239042 is 2409327.

It can be written as a sum of positive squares in 4 ways, for example, as 7017201 + 221841 = 2649^2 + 471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7238997 and 7239015.

It is not an unprimeable number, because it can be changed into a prime (7239041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12258 + ... + 12834.

Almost surely, 2^7239042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7239042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8520876).

7239042 is an abundant number, since it is smaller than the sum of its proper divisors (9802710).

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

7239042 is a wasteful number, since it uses less digits than its factorization.

7239042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7239042 is about 2690.5467845774. The cubic root of 7239042 is about 193.4462723657.

The spelling of 7239042 in words is "seven million, two hundred thirty-nine thousand, forty-two".