40121043233 has 4 divisors (see below), whose sum is σ = 40123469700. Its totient is φ = 40118616768.

The previous prime is 40121043217. The next prime is 40121043269. The reversal of 40121043233 is 33234012104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30608552209 + 9512491024 = 174953^2 + 97532^2 .

It is a cyclic number.

It is not a de Polignac number, because 40121043233 - 2⁴ = 40121043217 is a prime.

It is a super-2 number, since 2×40121043233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40121043199 and 40121043208.

It is not an unprimeable number, because it can be changed into a prime (40121043433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188260 + ... + 1221557.

It is an arithmetic number, because the mean of its divisors is an integer number (10030867425).

Almost surely, 2^40121043233 is an apocalyptic number.

It is an amenable number.

40121043233 is a deficient number, since it is larger than the sum of its proper divisors (2426467).

40121043233 is a wasteful number, since it uses less digits than its factorization.

40121043233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426466.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40121043233 its reverse (33234012104), we get a palindrome (73355055337).

The spelling of 40121043233 in words is "forty billion, one hundred twenty-one million, forty-three thousand, two hundred thirty-three".