142694885 has 4 divisors (see below), whose sum is σ = 171233868. Its totient is φ = 114155904.

The previous prime is 142694873. The next prime is 142694887. The reversal of 142694885 is 588496241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588496241 = 137 ⋅4295593.

It can be written as a sum of positive squares in 2 ways, for example, as 48080356 + 94614529 = 6934^2 + 9727^2 .

It is a cyclic number.

It is not a de Polignac number, because 142694885 - 2¹² = 142690789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142694887) 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, 14269484 + ... + 14269493.

It is an arithmetic number, because the mean of its divisors is an integer number (42808467).

Almost surely, 2^142694885 is an apocalyptic number.

It is an amenable number.

142694885 is a deficient number, since it is larger than the sum of its proper divisors (28538983).

142694885 is an equidigital number, since it uses as much as digits as its factorization.

142694885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28538982.

The product of its digits is 552960, while the sum is 47.

The square root of 142694885 is about 11945.4964317102. The cubic root of 142694885 is about 522.5599665613.

The spelling of 142694885 in words is "one hundred forty-two million, six hundred ninety-four thousand, eight hundred eighty-five".