21424242302 has 4 divisors (see below), whose sum is σ = 32136363456. Its totient is φ = 10712121150.

The previous prime is 21424242277. The next prime is 21424242419. The reversal of 21424242302 is 20324242412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5356060574 + ... + 5356060577.

It is an arithmetic number, because the mean of its divisors is an integer number (8034090864).

Almost surely, 2^21424242302 is an apocalyptic number.

21424242302 is a deficient number, since it is larger than the sum of its proper divisors (10712121154).

21424242302 is a wasteful number, since it uses less digits than its factorization.

21424242302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712121153.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 21424242302 its reverse (20324242412), we get a palindrome (41748484714).

The spelling of 21424242302 in words is "twenty-one billion, four hundred twenty-four million, two hundred forty-two thousand, three hundred two".