21433411242 has 32 divisors (see below), whose sum is σ = 47668642560. Its totient is φ = 7138644480.

The previous prime is 21433411211. The next prime is 21433411243. The reversal of 21433411242 is 24211433412.

21433411242 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 3 + 411 + 242 = 666.

It is a super-2 number, since 2×21433411242² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21433411243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94743 + ... + 227690.

It is an arithmetic number, because the mean of its divisors is an integer number (1489645080).

Almost surely, 2^21433411242 is an apocalyptic number.

21433411242 is an abundant number, since it is smaller than the sum of its proper divisors (26235231318).

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

21433411242 is a wasteful number, since it uses less digits than its factorization.

21433411242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323675 (or 323669 counting only the distinct ones).

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

Adding to 21433411242 its reverse (24211433412), we get a palindrome (45644844654).

The spelling of 21433411242 in words is "twenty-one billion, four hundred thirty-three million, four hundred eleven thousand, two hundred forty-two".