21423300034 has 8 divisors (see below), whose sum is σ = 32161445820. Its totient is φ = 10702818096.

The previous prime is 21423299977. The next prime is 21423300053. The reversal of 21423300034 is 43000332412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20459011225 + 964288809 = 143035^2 + 31053^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21423299978 and 21423300014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4412929 + ... + 4417780.

Almost surely, 2^21423300034 is an apocalyptic number.

21423300034 is a deficient number, since it is larger than the sum of its proper divisors (10738145786).

21423300034 is a wasteful number, since it uses less digits than its factorization.

21423300034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831924.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21423300034 its reverse (43000332412), we get a palindrome (64423632446).

The spelling of 21423300034 in words is "twenty-one billion, four hundred twenty-three million, three hundred thousand, thirty-four".