12040391127 has 16 divisors (see below), whose sum is σ = 16195553280. Its totient is φ = 7956379200.

The previous prime is 12040391119. The next prime is 12040391183. The reversal of 12040391127 is 72119304021.

It is not a de Polignac number, because 12040391127 - 2³ = 12040391119 is a prime.

It is a super-2 number, since 2×12040391127² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12040391094 and 12040391103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040391527) 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, 123624 + ... + 198402.

It is an arithmetic number, because the mean of its divisors is an integer number (1012222080).

Almost surely, 2^12040391127 is an apocalyptic number.

12040391127 is a deficient number, since it is larger than the sum of its proper divisors (4155162153).

12040391127 is a wasteful number, since it uses less digits than its factorization.

12040391127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75254.

The product of its (nonzero) digits is 3024, while the sum is 30.

Adding to 12040391127 its reverse (72119304021), we get a palindrome (84159695148).

The spelling of 12040391127 in words is "twelve billion, forty million, three hundred ninety-one thousand, one hundred twenty-seven".