40125120543 has 48 divisors (see below), whose sum is σ = 59644615680. Its totient is φ = 25981460928.

The previous prime is 40125120533. The next prime is 40125120571. The reversal of 40125120543 is 34502152104.

40125120543 is a `hidden beast` number, since 40 + 12 + 51 + 20 + 543 = 666.

It is not a de Polignac number, because 40125120543 - 2⁶ = 40125120479 is a prime.

It is a super-2 number, since 2×40125120543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125120533) 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 47 ways as a sum of consecutive naturals, for example, 45236446 + ... + 45237332.

It is an arithmetic number, because the mean of its divisors is an integer number (1242596160).

Almost surely, 2^40125120543 is an apocalyptic number.

40125120543 is a deficient number, since it is larger than the sum of its proper divisors (19519495137).

40125120543 is a wasteful number, since it uses less digits than its factorization.

40125120543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 40125120543 its reverse (34502152104), we get a palindrome (74627272647).

The spelling of 40125120543 in words is "forty billion, one hundred twenty-five million, one hundred twenty thousand, five hundred forty-three".