42734726509 has 8 divisors (see below), whose sum is σ = 43255864512. Its totient is φ = 42213737760.

The previous prime is 42734726491. The next prime is 42734726543. The reversal of 42734726509 is 90562743724.

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

It is a cyclic number.

It is not a de Polignac number, because 42734726509 - 2⁷ = 42734726381 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 (42734726579) 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 7 ways as a sum of consecutive naturals, for example, 605929 + ... + 672769.

It is an arithmetic number, because the mean of its divisors is an integer number (5406983064).

Almost surely, 2^42734726509 is an apocalyptic number.

It is an amenable number.

42734726509 is a deficient number, since it is larger than the sum of its proper divisors (521138003).

42734726509 is an equidigital number, since it uses as much as digits as its factorization.

42734726509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74627.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 42734726509 in words is "forty-two billion, seven hundred thirty-four million, seven hundred twenty-six thousand, five hundred nine".