7842078 has 24 divisors (see below), whose sum is σ = 17087616. Its totient is φ = 2599200.

The previous prime is 7842073. The next prime is 7842097. The reversal of 7842078 is 8702487.

It is a super-5 number, since 5×7842078⁵ (a number of 36 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2298 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (711984).

Almost surely, 2^7842078 is an apocalyptic number.

7842078 is an abundant number, since it is smaller than the sum of its proper divisors (9245538).

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

7842078 is a wasteful number, since it uses less digits than its factorization.

7842078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2477 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 7842078 is about 2800.3710468436. The cubic root of 7842078 is about 198.6752275988.

The spelling of 7842078 in words is "seven million, eight hundred forty-two thousand, seventy-eight".