215235142 has 8 divisors (see below), whose sum is σ = 331578576. Its totient is φ = 104708952.

The previous prime is 215235133. The next prime is 215235157. The reversal of 215235142 is 241532512.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454218 + ... + 1454365.

It is an arithmetic number, because the mean of its divisors is an integer number (41447322).

Almost surely, 2^215235142 is an apocalyptic number.

215235142 is a deficient number, since it is larger than the sum of its proper divisors (116343434).

215235142 is a wasteful number, since it uses less digits than its factorization.

215235142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908622.

The product of its digits is 2400, while the sum is 25.

The square root of 215235142 is about 14670.8943830974. The cubic root of 215235142 is about 599.2909605834.

Adding to 215235142 its reverse (241532512), we get a palindrome (456767654).

The spelling of 215235142 in words is "two hundred fifteen million, two hundred thirty-five thousand, one hundred forty-two".