7402842 has 24 divisors (see below), whose sum is σ = 16223220. Its totient is φ = 2439360.

The previous prime is 7402841. The next prime is 7402867. The reversal of 7402842 is 2482047.

It can be written as a sum of positive squares in 2 ways, for example, as 7017201 + 385641 = 2649^2 + 621^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7402841) 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 11 ways as a sum of consecutive naturals, for example, 709 + ... + 3912.

Almost surely, 2^7402842 is an apocalyptic number.

7402842 is an abundant number, since it is smaller than the sum of its proper divisors (8820378).

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

7402842 is a wasteful number, since it uses less digits than its factorization.

7402842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718 (or 4715 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 7402842 is about 2720.8164215911. The cubic root of 7402842 is about 194.8944596537.

Adding to 7402842 its reverse (2482047), we get a palindrome (9884889).

The spelling of 7402842 in words is "seven million, four hundred two thousand, eight hundred forty-two".