21442240302 has 32 divisors (see below), whose sum is σ = 49015680000. Its totient is φ = 6125748768.

The previous prime is 21442240289. The next prime is 21442240319. The reversal of 21442240302 is 20304224412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569724 + ... + 606192.

It is an arithmetic number, because the mean of its divisors is an integer number (1531740000).

Almost surely, 2^21442240302 is an apocalyptic number.

21442240302 is an abundant number, since it is smaller than the sum of its proper divisors (27573439698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21442240302 is a wasteful number, since it uses less digits than its factorization.

21442240302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50480.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21442240302 its reverse (20304224412), we get a palindrome (41746464714).

The spelling of 21442240302 in words is "twenty-one billion, four hundred forty-two million, two hundred forty thousand, three hundred two".