7840134 has 12 divisors (see below), whose sum is σ = 16986996. Its totient is φ = 2613372.

The previous prime is 7840081. The next prime is 7840153. The reversal of 7840134 is 4310487.

It is a super-2 number, since 2×7840134² = 122935402275912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7840098 and 7840107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217764 + ... + 217799.

It is an arithmetic number, because the mean of its divisors is an integer number (1415583).

Almost surely, 2^7840134 is an apocalyptic number.

7840134 is an abundant number, since it is smaller than the sum of its proper divisors (9146862).

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

7840134 is a wasteful number, since it uses less digits than its factorization.

7840134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435571 (or 435568 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7840134 is about 2800.0239284692. The cubic root of 7840134 is about 198.6588094776.

The spelling of 7840134 in words is "seven million, eight hundred forty thousand, one hundred thirty-four".