42387949623 has 12 divisors (see below), whose sum is σ = 59648418168. Its totient is φ = 26771335920.

The previous prime is 42387949621. The next prime is 42387949663. The reversal of 42387949623 is 32694978324.

42387949623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42387949623 - 2¹ = 42387949621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42387949621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19568608 + ... + 19570773.

It is an arithmetic number, because the mean of its divisors is an integer number (4970701514).

Almost surely, 2^42387949623 is an apocalyptic number.

42387949623 is a deficient number, since it is larger than the sum of its proper divisors (17260468545).

42387949623 is a wasteful number, since it uses less digits than its factorization.

42387949623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39139422 (or 39139403 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 57.

The spelling of 42387949623 in words is "forty-two billion, three hundred eighty-seven million, nine hundred forty-nine thousand, six hundred twenty-three".