7042681 has 2 divisors, whose sum is σ = 7042682. Its totient is φ = 7042680.

The previous prime is 7042649. The next prime is 7042723. The reversal of 7042681 is 1862407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6996025 + 46656 = 2645^2 + 216^2 .

It is an emirp because it is prime and its reverse (1862407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7042681 - 2⁵ = 7042649 is a prime.

It is a super-2 number, since 2×7042681² = 99198711335522, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7042601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3521340 + 3521341.

It is an arithmetic number, because the mean of its divisors is an integer number (3521341).

Almost surely, 2^7042681 is an apocalyptic number.

It is an amenable number.

7042681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7042681 is an equidigital number, since it uses as much as digits as its factorization.

7042681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 7042681 is about 2653.8050041403. The cubic root of 7042681 is about 191.6811203551.

It can be divided in two parts, 70426 and 81, that added together give a palindrome (70507).

The spelling of 7042681 in words is "seven million, forty-two thousand, six hundred eighty-one".