7407842 has 8 divisors (see below), whose sum is σ = 11966556. Its totient is φ = 3418992.

The previous prime is 7407797. The next prime is 7407859. The reversal of 7407842 is 2487047.

It can be written as a sum of positive squares in 2 ways, for example, as 7070281 + 337561 = 2659^2 + 581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7407842² = 109752246193928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7407799 and 7407808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142433 + ... + 142484.

Almost surely, 2^7407842 is an apocalyptic number.

7407842 is a deficient number, since it is larger than the sum of its proper divisors (4558714).

7407842 is a wasteful number, since it uses less digits than its factorization.

7407842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284932.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 7407842 is about 2721.7351083454. The cubic root of 7407842 is about 194.9383280757.

The spelling of 7407842 in words is "seven million, four hundred seven thousand, eight hundred forty-two".