4142695681 has 4 divisors (see below), whose sum is σ = 4143492864. Its totient is φ = 4141898500.

The previous prime is 4142695673. The next prime is 4142695703. The reversal of 4142695681 is 1865962414.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4142695681 - 2³ = 4142695673 is a prime.

It is a super-2 number, since 2×4142695681² = 34323855010752107522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4142695621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390745 + ... + 401206.

It is an arithmetic number, because the mean of its divisors is an integer number (1035873216).

Almost surely, 2^4142695681 is an apocalyptic number.

It is an amenable number.

4142695681 is a deficient number, since it is larger than the sum of its proper divisors (797183).

4142695681 is an equidigital number, since it uses as much as digits as its factorization.

4142695681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797182.

The product of its digits is 414720, while the sum is 46.

The square root of 4142695681 is about 64363.7761555364. The cubic root of 4142695681 is about 1606.0572067636.

The spelling of 4142695681 in words is "four billion, one hundred forty-two million, six hundred ninety-five thousand, six hundred eighty-one".