21432240302 has 8 divisors (see below), whose sum is σ = 35070938712. Its totient is φ = 9741927400.

The previous prime is 21432240287. The next prime is 21432240317. The reversal of 21432240302 is 20304223412.

It is an interprime number because it is at equal distance from previous prime (21432240287) and next prime (21432240317).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487096349 + ... + 487096392.

It is an arithmetic number, because the mean of its divisors is an integer number (4383867339).

Almost surely, 2^21432240302 is an apocalyptic number.

21432240302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21432240302 is a deficient number, since it is larger than the sum of its proper divisors (13638698410).

21432240302 is a wasteful number, since it uses less digits than its factorization.

21432240302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974192754.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 21432240302 its reverse (20304223412), we get a palindrome (41736463714).

The spelling of 21432240302 in words is "twenty-one billion, four hundred thirty-two million, two hundred forty thousand, three hundred two".