40123435742 has 8 divisors (see below), whose sum is σ = 64814780856. Its totient is φ = 18518508792.

The previous prime is 40123435741. The next prime is 40123435843. The reversal of 40123435742 is 24753432104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40123435741) 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 3 ways as a sum of consecutive naturals, for example, 771604508 + ... + 771604559.

It is an arithmetic number, because the mean of its divisors is an integer number (8101847607).

Almost surely, 2^40123435742 is an apocalyptic number.

40123435742 is a deficient number, since it is larger than the sum of its proper divisors (24691345114).

40123435742 is a wasteful number, since it uses less digits than its factorization.

40123435742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543209082.

The product of its (nonzero) digits is 80640, while the sum is 35.

Adding to 40123435742 its reverse (24753432104), we get a palindrome (64876867846).

The spelling of 40123435742 in words is "forty billion, one hundred twenty-three million, four hundred thirty-five thousand, seven hundred forty-two".