21140042033 has 8 divisors (see below), whose sum is σ = 23177755200. Its totient is φ = 19121644080.

The previous prime is 21140042017. The next prime is 21140042069. The reversal of 21140042033 is 33024004112.

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

It is not a de Polignac number, because 21140042033 - 2⁴ = 21140042017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21140041996 and 21140042014.

It is not an unprimeable number, because it can be changed into a prime (21140042083) 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, 4826510 + ... + 4830887.

It is an arithmetic number, because the mean of its divisors is an integer number (2897219400).

Almost surely, 2^21140042033 is an apocalyptic number.

It is an amenable number.

21140042033 is a deficient number, since it is larger than the sum of its proper divisors (2037713167).

21140042033 is a wasteful number, since it uses less digits than its factorization.

21140042033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657607.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21140042033 its reverse (33024004112), we get a palindrome (54164046145).

The spelling of 21140042033 in words is "twenty-one billion, one hundred forty million, forty-two thousand, thirty-three".