21241423044 has 24 divisors (see below), whose sum is σ = 55070356320. Its totient is φ = 7080474312.

The previous prime is 21241423043. The next prime is 21241423061. The reversal of 21241423044 is 44032414212.

21241423044 is a `hidden beast` number, since 2 + 12 + 414 + 230 + 4 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21241422999 and 21241423017.

It is not an unprimeable number, because it can be changed into a prime (21241423043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98339814 + ... + 98340029.

It is an arithmetic number, because the mean of its divisors is an integer number (2294598180).

Almost surely, 2^21241423044 is an apocalyptic number.

It is an amenable number.

21241423044 is an abundant number, since it is smaller than the sum of its proper divisors (33828933276).

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

21241423044 is a wasteful number, since it uses less digits than its factorization.

21241423044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196679856 (or 196679848 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21241423044 its reverse (44032414212), we get a palindrome (65273837256).

The spelling of 21241423044 in words is "twenty-one billion, two hundred forty-one million, four hundred twenty-three thousand, forty-four".