215142041 has 4 divisors (see below), whose sum is σ = 215323572. Its totient is φ = 214960512.

The previous prime is 215142017. The next prime is 215142049. The reversal of 215142041 is 140241512.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60388441 + 154753600 = 7771^2 + 12440^2 .

It is a cyclic number.

It is not a de Polignac number, because 215142041 - 2¹⁸ = 214879897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215142049) 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, 88976 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (53830893).

Almost surely, 2^215142041 is an apocalyptic number.

It is an amenable number.

215142041 is a deficient number, since it is larger than the sum of its proper divisors (181531).

215142041 is a wasteful number, since it uses less digits than its factorization.

215142041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181530.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 215142041 is about 14667.7210567968. The cubic root of 215142041 is about 599.2045393886.

Adding to 215142041 its reverse (140241512), we get a palindrome (355383553).

The spelling of 215142041 in words is "two hundred fifteen million, one hundred forty-two thousand, forty-one".