142231533 has 8 divisors (see below), whose sum is σ = 191520096. Its totient is φ = 93882000.

The previous prime is 142231493. The next prime is 142231561. The reversal of 142231533 is 335132241.

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

It is not a de Polignac number, because 142231533 - 2⁹ = 142231021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142231433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234403 + ... + 235008.

It is an arithmetic number, because the mean of its divisors is an integer number (23940012).

Almost surely, 2^142231533 is an apocalyptic number.

It is an amenable number.

142231533 is a deficient number, since it is larger than the sum of its proper divisors (49288563).

142231533 is a wasteful number, since it uses less digits than its factorization.

142231533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469515.

The product of its digits is 2160, while the sum is 24.

The square root of 142231533 is about 11926.0862398358. The cubic root of 142231533 is about 521.9937426769.

Adding to 142231533 its reverse (335132241), we get a palindrome (477363774).

The spelling of 142231533 in words is "one hundred forty-two million, two hundred thirty-one thousand, five hundred thirty-three".