142669633 has 4 divisors (see below), whose sum is σ = 142713280. Its totient is φ = 142625988.

The previous prime is 142669609. The next prime is 142669643. The reversal of 142669633 is 336966241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142669633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142669643) by changing a digit.

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, 16485 + ... + 23602.

It is an arithmetic number, because the mean of its divisors is an integer number (35678320).

Almost surely, 2^142669633 is an apocalyptic number.

It is an amenable number.

142669633 is a deficient number, since it is larger than the sum of its proper divisors (43647).

142669633 is an equidigital number, since it uses as much as digits as its factorization.

142669633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43646.

The product of its digits is 139968, while the sum is 40.

The square root of 142669633 is about 11944.4394175700. The cubic root of 142669633 is about 522.5291398017.

The spelling of 142669633 in words is "one hundred forty-two million, six hundred sixty-nine thousand, six hundred thirty-three".