4142492681 has 4 divisors (see below), whose sum is σ = 4143362832. Its totient is φ = 4141622532.

The previous prime is 4142492659. The next prime is 4142492693. The reversal of 4142492681 is 1862942414.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1862942414 = 2 ⋅931471207.

It is a cyclic number.

It is not a de Polignac number, because 4142492681 - 2¹⁴ = 4142476297 is a prime.

It is a super-2 number, since 2×4142492681² = 34320491224277135522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4142492621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427895 + ... + 437468.

It is an arithmetic number, because the mean of its divisors is an integer number (1035840708).

Almost surely, 2^4142492681 is an apocalyptic number.

It is an amenable number.

4142492681 is a deficient number, since it is larger than the sum of its proper divisors (870151).

4142492681 is an equidigital number, since it uses as much as digits as its factorization.

4142492681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870150.

The product of its digits is 110592, while the sum is 41.

The square root of 4142492681 is about 64362.1991622412. The cubic root of 4142492681 is about 1606.0309730450.

The spelling of 4142492681 in words is "four billion, one hundred forty-two million, four hundred ninety-two thousand, six hundred eighty-one".