40120351043 has 4 divisors (see below), whose sum is σ = 40123373928. Its totient is φ = 40117328160.

The previous prime is 40120350997. The next prime is 40120351079. The reversal of 40120351043 is 34015302104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40120351043 - 2¹⁰ = 40120350019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40120351343) 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, 1491446 + ... + 1518107.

It is an arithmetic number, because the mean of its divisors is an integer number (10030843482).

Almost surely, 2^40120351043 is an apocalyptic number.

40120351043 is a deficient number, since it is larger than the sum of its proper divisors (3022885).

40120351043 is a wasteful number, since it uses less digits than its factorization.

40120351043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022884.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 40120351043 its reverse (34015302104), we get a palindrome (74135653147).

The spelling of 40120351043 in words is "forty billion, one hundred twenty million, three hundred fifty-one thousand, forty-three".