40344003121 has 8 divisors (see below), whose sum is σ = 41271867560. Its totient is φ = 39426279552.

The previous prime is 40344003113. The next prime is 40344003143. The reversal of 40344003121 is 12130044304.

It can be written as a sum of positive squares in 4 ways, for example, as 22070370721 + 18273632400 = 148561^2 + 135180^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40344003121 - 2³ = 40344003113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40344003092 and 40344003101.

It is not an unprimeable number, because it can be changed into a prime (40344003151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527170 + ... + 2543083.

It is an arithmetic number, because the mean of its divisors is an integer number (5158983445).

Almost surely, 2^40344003121 is an apocalyptic number.

It is an amenable number.

40344003121 is a deficient number, since it is larger than the sum of its proper divisors (927864439).

40344003121 is a wasteful number, since it uses less digits than its factorization.

40344003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070435.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40344003121 its reverse (12130044304), we get a palindrome (52474047425).

The spelling of 40344003121 in words is "forty billion, three hundred forty-four million, three thousand, one hundred twenty-one".