215142415 has 8 divisors (see below), whose sum is σ = 271758960. Its totient is φ = 163055232.

The previous prime is 215142413. The next prime is 215142419. The reversal of 215142415 is 514241512.

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

It is a cyclic number.

It is not a de Polignac number, because 215142415 - 2¹ = 215142413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215142415.

It is a congruent number.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1132234 + ... + 1132423.

It is an arithmetic number, because the mean of its divisors is an integer number (33969870).

Almost surely, 2^215142415 is an apocalyptic number.

215142415 is a deficient number, since it is larger than the sum of its proper divisors (56616545).

215142415 is a wasteful number, since it uses less digits than its factorization.

215142415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264681.

The product of its digits is 1600, while the sum is 25.

The square root of 215142415 is about 14667.7338058747. The cubic root of 215142415 is about 599.2048866047.

Adding to 215142415 its reverse (514241512), we get a palindrome (729383927).

It can be divided in two parts, 215 and 142415, that multiplied together give a triangular number (30619225 = T₇₈₂₅).

The spelling of 215142415 in words is "two hundred fifteen million, one hundred forty-two thousand, four hundred fifteen".