42432088649 has 16 divisors (see below), whose sum is σ = 43226361360. Its totient is φ = 41645767680.

The previous prime is 42432088639. The next prime is 42432088651. The reversal of 42432088649 is 94688023424.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 24046084624 + 18386004025 = 155068^2 + 135595^2 .

It is a cyclic number.

It is not a de Polignac number, because 42432088649 - 2⁸ = 42432088393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42432088597 and 42432088606.

It is not an unprimeable number, because it can be changed into a prime (42432088639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9872669 + ... + 9876965.

It is an arithmetic number, because the mean of its divisors is an integer number (2701647585).

Almost surely, 2^42432088649 is an apocalyptic number.

It is an amenable number.

42432088649 is a deficient number, since it is larger than the sum of its proper divisors (794272711).

42432088649 is a wasteful number, since it uses less digits than its factorization.

42432088649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5180.

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 42432088649 in words is "forty-two billion, four hundred thirty-two million, eighty-eight thousand, six hundred forty-nine".