142890033 has 32 divisors (see below), whose sum is σ = 224888832. Its totient is φ = 79560000.

The previous prime is 142890019. The next prime is 142890037. The reversal of 142890033 is 330098241.

It is not a de Polignac number, because 142890033 - 2⁵ = 142890001 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142890037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107016 + ... + 108342.

It is an arithmetic number, because the mean of its divisors is an integer number (7027776).

Almost surely, 2^142890033 is an apocalyptic number.

142890033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142890033 is a deficient number, since it is larger than the sum of its proper divisors (81998799).

142890033 is a wasteful number, since it uses less digits than its factorization.

142890033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 142890033 is about 11953.6619075495. The cubic root of 142890033 is about 522.7980738588.

The spelling of 142890033 in words is "one hundred forty-two million, eight hundred ninety thousand, thirty-three".