142222939 has 4 divisors (see below), whose sum is σ = 142316656. Its totient is φ = 142129224.

The previous prime is 142222937. The next prime is 142222943. The reversal of 142222939 is 939222241.

142222939 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 an emirpimes, since its reverse is a distinct semiprime: 939222241 = 449 ⋅2091809.

It is a cyclic number.

It is not a de Polignac number, because 142222939 - 2¹ = 142222937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142222937) 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, 44544 + ... + 47629.

It is an arithmetic number, because the mean of its divisors is an integer number (35579164).

Almost surely, 2^142222939 is an apocalyptic number.

142222939 is a deficient number, since it is larger than the sum of its proper divisors (93717).

142222939 is an equidigital number, since it uses as much as digits as its factorization.

142222939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93716.

The product of its digits is 15552, while the sum is 34.

The square root of 142222939 is about 11925.7259317829. The cubic root of 142222939 is about 521.9832290575.

It can be divided in two parts, 14222 and 2939, that added together give a square (17161 = 131²).

The spelling of 142222939 in words is "one hundred forty-two million, two hundred twenty-two thousand, nine hundred thirty-nine".