142457885 has 4 divisors (see below), whose sum is σ = 170949468. Its totient is φ = 113966304.

The previous prime is 142457873. The next prime is 142457891. The reversal of 142457885 is 588754241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72267001 + 70190884 = 8501^2 + 8378^2 .

It is a cyclic number.

It is not a de Polignac number, because 142457885 - 2⁴ = 142457869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14245784 + ... + 14245793.

It is an arithmetic number, because the mean of its divisors is an integer number (42737367).

Almost surely, 2^142457885 is an apocalyptic number.

It is an amenable number.

142457885 is a deficient number, since it is larger than the sum of its proper divisors (28491583).

142457885 is an equidigital number, since it uses as much as digits as its factorization.

142457885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28491582.

The product of its digits is 358400, while the sum is 44.

The square root of 142457885 is about 11935.5722527242. The cubic root of 142457885 is about 522.2705019914.

The spelling of 142457885 in words is "one hundred forty-two million, four hundred fifty-seven thousand, eight hundred eighty-five".