142255836 has 18 divisors (see below), whose sum is σ = 359591232. Its totient is φ = 47418600.

The previous prime is 142255801. The next prime is 142255871. The reversal of 142255836 is 638552241.

It is an interprime number because it is at equal distance from previous prime (142255801) and next prime (142255871).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3951551 = 142255836 / (1 + 4 + 2 + 2 + 5 + 5 + 8 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 142255836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1975740 + ... + 1975811.

Almost surely, 2^142255836 is an apocalyptic number.

It is an amenable number.

142255836 is an abundant number, since it is smaller than the sum of its proper divisors (217335396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142255836 is a wasteful number, since it uses less digits than its factorization.

142255836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951561 (or 3951556 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 142255836 is about 11927.1050972145. The cubic root of 142255836 is about 522.0234718824.

The spelling of 142255836 in words is "one hundred forty-two million, two hundred fifty-five thousand, eight hundred thirty-six".