21432542041 has 8 divisors (see below), whose sum is σ = 22093034624. Its totient is φ = 20776325040.

The previous prime is 21432542009. The next prime is 21432542059. The reversal of 21432542041 is 14024523412.

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 21432542041 - 2⁵ = 21432542009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21432512041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058715 + ... + 1078768.

It is an arithmetic number, because the mean of its divisors is an integer number (2761629328).

Almost surely, 2^21432542041 is an apocalyptic number.

It is an amenable number.

21432542041 is a deficient number, since it is larger than the sum of its proper divisors (660492583).

21432542041 is a wasteful number, since it uses less digits than its factorization.

21432542041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137791.

The product of its (nonzero) digits is 7680, while the sum is 28.

The spelling of 21432542041 in words is "twenty-one billion, four hundred thirty-two million, five hundred forty-two thousand, forty-one".