40123442541 has 16 divisors (see below), whose sum is σ = 65843598464. Its totient is φ = 21164013504.

The previous prime is 40123442531. The next prime is 40123442543. The reversal of 40123442541 is 14524432104.

It is not a de Polignac number, because 40123442541 - 2¹¹ = 40123440493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40123442499 and 40123442508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123442543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73485886 + ... + 73486431.

It is an arithmetic number, because the mean of its divisors is an integer number (4115224904).

Almost surely, 2^40123442541 is an apocalyptic number.

It is an amenable number.

40123442541 is a deficient number, since it is larger than the sum of its proper divisors (25720155923).

40123442541 is a wasteful number, since it uses less digits than its factorization.

40123442541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146972340.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 40123442541 its reverse (14524432104), we get a palindrome (54647874645).

The spelling of 40123442541 in words is "forty billion, one hundred twenty-three million, four hundred forty-two thousand, five hundred forty-one".