142978853 has 4 divisors (see below), whose sum is σ = 143016588. Its totient is φ = 142941120.

The previous prime is 142978837. The next prime is 142978859. The reversal of 142978853 is 358879241.

It is a happy number.

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 54656449 + 88322404 = 7393^2 + 9398^2 .

It is a cyclic number.

It is not a de Polignac number, because 142978853 - 2⁴ = 142978837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142978798 and 142978807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142978859) 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, 12458 + ... + 21003.

It is an arithmetic number, because the mean of its divisors is an integer number (35754147).

Almost surely, 2^142978853 is an apocalyptic number.

It is an amenable number.

142978853 is a deficient number, since it is larger than the sum of its proper divisors (37735).

142978853 is an equidigital number, since it uses as much as digits as its factorization.

142978853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37734.

The product of its digits is 483840, while the sum is 47.

The square root of 142978853 is about 11957.3765099206. The cubic root of 142978853 is about 522.9063746409.

The spelling of 142978853 in words is "one hundred forty-two million, nine hundred seventy-eight thousand, eight hundred fifty-three".