215029141 has 4 divisors (see below), whose sum is σ = 227677932. Its totient is φ = 202380352.

The previous prime is 215029123. The next prime is 215029147. The reversal of 215029141 is 141920512.

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 197514916 + 17514225 = 14054^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 215029141 - 2⁹ = 215028629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215029147) 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 3 ways as a sum of consecutive naturals, for example, 6324370 + ... + 6324403.

It is an arithmetic number, because the mean of its divisors is an integer number (56919483).

Almost surely, 2^215029141 is an apocalyptic number.

It is an amenable number.

215029141 is a deficient number, since it is larger than the sum of its proper divisors (12648791).

215029141 is a wasteful number, since it uses less digits than its factorization.

215029141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12648790.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 215029141 is about 14663.8719647984. The cubic root of 215029141 is about 599.0997062758.

Adding to 215029141 its reverse (141920512), we get a palindrome (356949653).

The spelling of 215029141 in words is "two hundred fifteen million, twenty-nine thousand, one hundred forty-one".