142348771 has 4 divisors (see below), whose sum is σ = 148537872. Its totient is φ = 136159672.

The previous prime is 142348763. The next prime is 142348813. The reversal of 142348771 is 177843241.

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 142348771 - 2³ = 142348763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142348771.

It is not an unprimeable number, because it can be changed into a prime (142348751) 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, 3094516 + ... + 3094561.

It is an arithmetic number, because the mean of its divisors is an integer number (37134468).

Almost surely, 2^142348771 is an apocalyptic number.

142348771 is a deficient number, since it is larger than the sum of its proper divisors (6189101).

142348771 is an equidigital number, since it uses as much as digits as its factorization.

142348771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189100.

The product of its digits is 37632, while the sum is 37.

The square root of 142348771 is about 11931.0004190763. Note that the first 3 decimals coincide. The cubic root of 142348771 is about 522.1371255453.

It can be divided in two parts, 14234 and 8771, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 142348771 in words is "one hundred forty-two million, three hundred forty-eight thousand, seven hundred seventy-one".