40122540439 has 4 divisors (see below), whose sum is σ = 40123954800. Its totient is φ = 40121126080.

The previous prime is 40122540421. The next prime is 40122540443. The reversal of 40122540439 is 93404522104.

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-40122540439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122541439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663739 + ... + 721660.

It is an arithmetic number, because the mean of its divisors is an integer number (10030988700).

Almost surely, 2^40122540439 is an apocalyptic number.

40122540439 is a deficient number, since it is larger than the sum of its proper divisors (1414361).

40122540439 is a wasteful number, since it uses less digits than its factorization.

40122540439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414360.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 40122540439 in words is "forty billion, one hundred twenty-two million, five hundred forty thousand, four hundred thirty-nine".