42387746999 has 8 divisors (see below), whose sum is σ = 45918453840. Its totient is φ = 39127149048.

The previous prime is 42387746957. The next prime is 42387747023. The reversal of 42387746999 is 99964778324.

It is a de Polignac number, because none of the positive numbers 2^k-42387746999 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 (42387746299) 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, 9644537 + ... + 9648930.

It is an arithmetic number, because the mean of its divisors is an integer number (5739806730).

Almost surely, 2^42387746999 is an apocalyptic number.

42387746999 is a deficient number, since it is larger than the sum of its proper divisors (3530706841).

42387746999 is an equidigital number, since it uses as much as digits as its factorization.

42387746999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19293506 (or 19293480 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 68.

The spelling of 42387746999 in words is "forty-two billion, three hundred eighty-seven million, seven hundred forty-six thousand, nine hundred ninety-nine".