21342000403 has 8 divisors (see below), whose sum is σ = 22272350976. Its totient is φ = 20411853000.

The previous prime is 21342000391. The next prime is 21342000419. The reversal of 21342000403 is 30400024312.

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 21342000403 - 2⁹ = 21341999891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342000503) 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, 187768 + ... + 279178.

It is an arithmetic number, because the mean of its divisors is an integer number (2784043872).

Almost surely, 2^21342000403 is an apocalyptic number.

21342000403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21342000403 is a deficient number, since it is larger than the sum of its proper divisors (930350573).

21342000403 is a wasteful number, since it uses less digits than its factorization.

21342000403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101585.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21342000403 its reverse (30400024312), we get a palindrome (51742024715).

The spelling of 21342000403 in words is "twenty-one billion, three hundred forty-two million, four hundred three", and thus it is an aban number.