142290146 has 8 divisors (see below), whose sum is σ = 213543660. Its totient is φ = 71108928.

The previous prime is 142290133. The next prime is 142290151. The reversal of 142290146 is 641092241.

142290146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119355625 + 22934521 = 10925^2 + 4789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 12851 + ... + 21206.

Almost surely, 2^142290146 is an apocalyptic number.

142290146 is a deficient number, since it is larger than the sum of its proper divisors (71253514).

142290146 is a wasteful number, since it uses less digits than its factorization.

142290146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36148.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 142290146 is about 11928.5433310191. The cubic root of 142290146 is about 522.0654366179.

The spelling of 142290146 in words is "one hundred forty-two million, two hundred ninety thousand, one hundred forty-six".