40042023261 has 16 divisors (see below), whose sum is σ = 56543256000. Its totient is φ = 25118477568.

The previous prime is 40042023253. The next prime is 40042023323. The reversal of 40042023261 is 16232024004.

It is not a de Polignac number, because 40042023261 - 2³ = 40042023253 is a prime.

It is a super-3 number, since 3×40042023261³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042023251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130815 + ... + 311763.

It is an arithmetic number, because the mean of its divisors is an integer number (3533953500).

Almost surely, 2^40042023261 is an apocalyptic number.

It is an amenable number.

40042023261 is a deficient number, since it is larger than the sum of its proper divisors (16501232739).

40042023261 is a wasteful number, since it uses less digits than its factorization.

40042023261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185308.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40042023261 its reverse (16232024004), we get a palindrome (56274047265).

The spelling of 40042023261 in words is "forty billion, forty-two million, twenty-three thousand, two hundred sixty-one".