142011633 has 4 divisors (see below), whose sum is σ = 189348848. Its totient is φ = 94674420.

The previous prime is 142011601. The next prime is 142011641. The reversal of 142011633 is 336110241.

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 not a de Polignac number, because 142011633 - 2⁵ = 142011601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142013633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23668603 + ... + 23668608.

It is an arithmetic number, because the mean of its divisors is an integer number (47337212).

Almost surely, 2^142011633 is an apocalyptic number.

It is an amenable number.

142011633 is a deficient number, since it is larger than the sum of its proper divisors (47337215).

142011633 is an equidigital number, since it uses as much as digits as its factorization.

142011633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47337214.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 142011633 is about 11916.8633876536. The cubic root of 142011633 is about 521.7245908500.

Adding to 142011633 its reverse (336110241), we get a palindrome (478121874).

The spelling of 142011633 in words is "one hundred forty-two million, eleven thousand, six hundred thirty-three".