42732623729 has 2 divisors, whose sum is σ = 42732623730. Its totient is φ = 42732623728.

The previous prime is 42732623693. The next prime is 42732623743. The reversal of 42732623729 is 92732623724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41717245504 + 1015378225 = 204248^2 + 31865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42732623729 is a prime.

It is not a weakly prime, because it can be changed into another prime (42732623629) 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 as a sum of consecutive naturals, namely, 21366311864 + 21366311865.

It is an arithmetic number, because the mean of its divisors is an integer number (21366311865).

Almost surely, 2^42732623729 is an apocalyptic number.

It is an amenable number.

42732623729 is a deficient number, since it is larger than the sum of its proper divisors (1).

42732623729 is an equidigital number, since it uses as much as digits as its factorization.

42732623729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 47.

The spelling of 42732623729 in words is "forty-two billion, seven hundred thirty-two million, six hundred twenty-three thousand, seven hundred twenty-nine".