21142411403 has 8 divisors (see below), whose sum is σ = 22389917472. Its totient is φ = 19895331456.

The previous prime is 21142411331. The next prime is 21142411447. The reversal of 21142411403 is 30411424112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21142411403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21142416403) 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, 1400 + ... + 205637.

It is an arithmetic number, because the mean of its divisors is an integer number (2798739684).

Almost surely, 2^21142411403 is an apocalyptic number.

21142411403 is a deficient number, since it is larger than the sum of its proper divisors (1247506069).

21142411403 is a wasteful number, since it uses less digits than its factorization.

21142411403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213061.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21142411403 its reverse (30411424112), we get a palindrome (51553835515).

The spelling of 21142411403 in words is "twenty-one billion, one hundred forty-two million, four hundred eleven thousand, four hundred three".