40534021121 has 4 divisors (see below), whose sum is σ = 44218932144. Its totient is φ = 36849110100.

The previous prime is 40534021081. The next prime is 40534021141. The reversal of 40534021121 is 12112043504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40534021121 - 2⁶ = 40534021057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40534021141) 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, 1842455495 + ... + 1842455516.

It is an arithmetic number, because the mean of its divisors is an integer number (11054733036).

Almost surely, 2^40534021121 is an apocalyptic number.

It is an amenable number.

40534021121 is a deficient number, since it is larger than the sum of its proper divisors (3684911023).

40534021121 is a wasteful number, since it uses less digits than its factorization.

40534021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684911022.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 40534021121 its reverse (12112043504), we get a palindrome (52646064625).

The spelling of 40534021121 in words is "forty billion, five hundred thirty-four million, twenty-one thousand, one hundred twenty-one".