215142433 has 4 divisors (see below), whose sum is σ = 234700848. Its totient is φ = 195584020.

The previous prime is 215142419. The next prime is 215142451. The reversal of 215142433 is 334241512.

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 not a de Polignac number, because 215142433 - 2⁵ = 215142401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215142398 and 215142407.

It is not an unprimeable number, because it can be changed into a prime (215142413) 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, 9779191 + ... + 9779212.

It is an arithmetic number, because the mean of its divisors is an integer number (58675212).

Almost surely, 2^215142433 is an apocalyptic number.

It is an amenable number.

215142433 is a deficient number, since it is larger than the sum of its proper divisors (19558415).

215142433 is a wasteful number, since it uses less digits than its factorization.

215142433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19558414.

The product of its digits is 2880, while the sum is 25.

The square root of 215142433 is about 14667.7344194664. The cubic root of 215142433 is about 599.2049033157.

Adding to 215142433 its reverse (334241512), we get a palindrome (549383945).

The spelling of 215142433 in words is "two hundred fifteen million, one hundred forty-two thousand, four hundred thirty-three".