40442343043 has 4 divisors (see below), whose sum is σ = 42200705808. Its totient is φ = 38683980280.

The previous prime is 40442343017. The next prime is 40442343059. The reversal of 40442343043 is 34034324404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40442343043 is a prime.

It is a super-2 number, since 2×40442343043² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40442342996 and 40442343014.

It is not an unprimeable number, because it can be changed into a prime (40442343943) 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 3 ways as a sum of consecutive naturals, for example, 879181348 + ... + 879181393.

It is an arithmetic number, because the mean of its divisors is an integer number (10550176452).

Almost surely, 2^40442343043 is an apocalyptic number.

40442343043 is a deficient number, since it is larger than the sum of its proper divisors (1758362765).

40442343043 is a wasteful number, since it uses less digits than its factorization.

40442343043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758362764.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40442343043 its reverse (34034324404), we get a palindrome (74476667447).

The spelling of 40442343043 in words is "forty billion, four hundred forty-two million, three hundred forty-three thousand, forty-three".