142323861 has 4 divisors (see below), whose sum is σ = 189765152. Its totient is φ = 94882572.

The previous prime is 142323829. The next prime is 142323877. The reversal of 142323861 is 168323241.

142323861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 142323861 - 2⁵ = 142323829 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 (142323061) 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, 23720641 + ... + 23720646.

It is an arithmetic number, because the mean of its divisors is an integer number (47441288).

Almost surely, 2^142323861 is an apocalyptic number.

It is an amenable number.

142323861 is a deficient number, since it is larger than the sum of its proper divisors (47441291).

142323861 is an equidigital number, since it uses as much as digits as its factorization.

142323861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47441290.

The product of its digits is 6912, while the sum is 30.

The square root of 142323861 is about 11929.9564542374. The cubic root of 142323861 is about 522.1066670350.

The spelling of 142323861 in words is "one hundred forty-two million, three hundred twenty-three thousand, eight hundred sixty-one".