142217874 has 12 divisors (see below), whose sum is σ = 308138766. Its totient is φ = 47405952.

The previous prime is 142217861. The next prime is 142217897. The reversal of 142217874 is 478712241.

It can be written as a sum of positive squares in only one way, i.e., 77528025 + 64689849 = 8805^2 + 8043^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3950479 + ... + 3950514.

Almost surely, 2^142217874 is an apocalyptic number.

142217874 is an abundant number, since it is smaller than the sum of its proper divisors (165920892).

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

142217874 is a wasteful number, since it uses less digits than its factorization.

142217874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901001 (or 7900998 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 142217874 is about 11925.5135738466. The cubic root of 142217874 is about 521.9770325034.

The spelling of 142217874 in words is "one hundred forty-two million, two hundred seventeen thousand, eight hundred seventy-four".