40043442542 has 4 divisors (see below), whose sum is σ = 60065163816. Its totient is φ = 20021721270.

The previous prime is 40043442539. The next prime is 40043442577. The reversal of 40043442542 is 24524434004.

40043442542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×40043442542² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40043442499 and 40043442508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010860634 + ... + 10010860637.

It is an arithmetic number, because the mean of its divisors is an integer number (15016290954).

Almost surely, 2^40043442542 is an apocalyptic number.

40043442542 is a deficient number, since it is larger than the sum of its proper divisors (20021721274).

40043442542 is a wasteful number, since it uses less digits than its factorization.

40043442542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021721273.

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 40043442542 its reverse (24524434004), we get a palindrome (64567876546).

The spelling of 40043442542 in words is "forty billion, forty-three million, four hundred forty-two thousand, five hundred forty-two".