2340142681 has 2 divisors, whose sum is σ = 2340142682. Its totient is φ = 2340142680.

The previous prime is 2340142591. The next prime is 2340142687. The reversal of 2340142681 is 1862410432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2147488281 + 192654400 = 46341^2 + 13880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340142681 - 2²⁷ = 2205924953 is a prime.

It is a super-2 number, since 2×2340142681² = 10952535534875735522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2340142687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1170071340 + 1170071341.

It is an arithmetic number, because the mean of its divisors is an integer number (1170071341).

Almost surely, 2^2340142681 is an apocalyptic number.

It is an amenable number.

2340142681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2340142681 is an equidigital number, since it uses as much as digits as its factorization.

2340142681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 2340142681 is about 48375.0212506413. The cubic root of 2340142681 is about 1327.6413773814.

The spelling of 2340142681 in words is "two billion, three hundred forty million, one hundred forty-two thousand, six hundred eighty-one".