142250279 has 4 divisors (see below), whose sum is σ = 145719840. Its totient is φ = 138780720.

The previous prime is 142250267. The next prime is 142250327. The reversal of 142250279 is 972052241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142250279 - 2²⁰ = 141201703 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 (142250219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734719 + ... + 1734800.

It is an arithmetic number, because the mean of its divisors is an integer number (36429960).

Almost surely, 2^142250279 is an apocalyptic number.

142250279 is a deficient number, since it is larger than the sum of its proper divisors (3469561).

142250279 is an equidigital number, since it uses as much as digits as its factorization.

142250279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469560.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 142250279 is about 11926.8721381593. The cubic root of 142250279 is about 522.0166744526.

The spelling of 142250279 in words is "one hundred forty-two million, two hundred fifty thousand, two hundred seventy-nine".