142806245 has 4 divisors (see below), whose sum is σ = 171367500. Its totient is φ = 114244992.

The previous prime is 142806233. The next prime is 142806253. The reversal of 142806245 is 542608241.

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 24910081 + 117896164 = 4991^2 + 10858^2 .

It is a cyclic number.

It is not a de Polignac number, because 142806245 - 2⁴ = 142806229 is a prime.

It is a super-2 number, since 2×142806245² = 40787247222000050, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 14280620 + ... + 14280629.

It is an arithmetic number, because the mean of its divisors is an integer number (42841875).

Almost surely, 2^142806245 is an apocalyptic number.

It is an amenable number.

142806245 is a deficient number, since it is larger than the sum of its proper divisors (28561255).

142806245 is an equidigital number, since it uses as much as digits as its factorization.

142806245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28561254.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 142806245 is about 11950.1566935334. The cubic root of 142806245 is about 522.6958675937.

The spelling of 142806245 in words is "one hundred forty-two million, eight hundred six thousand, two hundred forty-five".