21143413242 has 48 divisors (see below), whose sum is σ = 52495597440. Its totient is φ = 6024766176.

The previous prime is 21143413241. The next prime is 21143413267. The reversal of 21143413242 is 24231434112.

21143413242 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 3 + 413 + 242 = 666.

It is not an unprimeable number, because it can be changed into a prime (21143413241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177942 + ... + 271937.

It is an arithmetic number, because the mean of its divisors is an integer number (1093658280).

Almost surely, 2^21143413242 is an apocalyptic number.

21143413242 is an abundant number, since it is smaller than the sum of its proper divisors (31352184198).

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

21143413242 is a wasteful number, since it uses less digits than its factorization.

21143413242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450267 (or 450264 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21143413242 its reverse (24231434112), we get a palindrome (45374847354).

It can be divided in two parts, 211434 and 13242, that added together give a square (224676 = 474²).

The spelling of 21143413242 in words is "twenty-one billion, one hundred forty-three million, four hundred thirteen thousand, two hundred forty-two".