40131307655542 has 4 divisors (see below), whose sum is σ = 60196961483316. Its totient is φ = 20065653827770.

The previous prime is 40131307655497. The next prime is 40131307655581. The reversal of 40131307655542 is 24555670313104.

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

It is a super-2 number, since 2×40131307655542² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40131307655492 and 40131307655501.

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, 10032826913884 + ... + 10032826913887.

It is an arithmetic number, because the mean of its divisors is an integer number (15049240370829).

Almost surely, 2^{40131307655542} is an apocalyptic number.

40131307655542 is a deficient number, since it is larger than the sum of its proper divisors (20065653827774).

40131307655542 is a wasteful number, since it uses less digits than its factorization.

40131307655542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20065653827773.

The product of its (nonzero) digits is 1512000, while the sum is 46.

Adding to 40131307655542 its reverse (24555670313104), we get a palindrome (64686977968646).

The spelling of 40131307655542 in words is "forty trillion, one hundred thirty-one billion, three hundred seven million, six hundred fifty-five thousand, five hundred forty-two".