40123041291 has 6 divisors (see below), whose sum is σ = 57955504100. Its totient is φ = 26748694188.

The previous prime is 40123041281. The next prime is 40123041341. The reversal of 40123041291 is 19214032104.

It is a happy number.

40123041291 is a `hidden beast` number, since 40 + 123 + 0 + 412 + 91 = 666.

It is not a de Polignac number, because 40123041291 - 2²⁵ = 40089486859 is a prime.

It is a super-3 number, since 3×40123041291³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40123041251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2229057841 + ... + 2229057858.

Almost surely, 2^40123041291 is an apocalyptic number.

40123041291 is a deficient number, since it is larger than the sum of its proper divisors (17832462809).

40123041291 is a wasteful number, since it uses less digits than its factorization.

40123041291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458115705 (or 4458115702 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 40123041291 its reverse (19214032104), we get a palindrome (59337073395).

The spelling of 40123041291 in words is "forty billion, one hundred twenty-three million, forty-one thousand, two hundred ninety-one".