215132429 has 4 divisors (see below), whose sum is σ = 215328576. Its totient is φ = 214936284.

The previous prime is 215132419. The next prime is 215132441. The reversal of 215132429 is 924231512.

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 215132429 - 2²⁰ = 214083853 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 (215132419) 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, 96419 + ... + 98624.

It is an arithmetic number, because the mean of its divisors is an integer number (53832144).

Almost surely, 2^215132429 is an apocalyptic number.

It is an amenable number.

215132429 is a deficient number, since it is larger than the sum of its proper divisors (196147).

215132429 is a wasteful number, since it uses less digits than its factorization.

215132429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196146.

The product of its digits is 4320, while the sum is 29.

The square root of 215132429 is about 14667.3933948742. The cubic root of 215132429 is about 599.1956156100.

The spelling of 215132429 in words is "two hundred fifteen million, one hundred thirty-two thousand, four hundred twenty-nine".