42738009487 has 4 divisors (see below), whose sum is σ = 42741189000. Its totient is φ = 42734829976.

The previous prime is 42738009481. The next prime is 42738009529. The reversal of 42738009487 is 78490083724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42738009487 - 2¹⁹ = 42737485199 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 (42738009481) 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, 1569508 + ... + 1596505.

It is an arithmetic number, because the mean of its divisors is an integer number (10685297250).

Almost surely, 2^42738009487 is an apocalyptic number.

42738009487 is a deficient number, since it is larger than the sum of its proper divisors (3179513).

42738009487 is a wasteful number, since it uses less digits than its factorization.

42738009487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179512.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 42738009487 in words is "forty-two billion, seven hundred thirty-eight million, nine thousand, four hundred eighty-seven".