42491966103 has 12 divisors (see below), whose sum is σ = 61381984768. Its totient is φ = 28325808000.

The previous prime is 42491966087. The next prime is 42491966113. The reversal of 42491966103 is 30166919424.

42491966103 is a `hidden beast` number, since 4 + 24 + 9 + 1 + 9 + 6 + 610 + 3 = 666.

It is not a de Polignac number, because 42491966103 - 2⁴ = 42491966087 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 (42491966113) 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, 51898 + ... + 296103.

Almost surely, 2^42491966103 is an apocalyptic number.

42491966103 is a deficient number, since it is larger than the sum of its proper divisors (18890018665).

42491966103 is a wasteful number, since it uses less digits than its factorization.

42491966103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361574 (or 361571 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 42491966103 in words is "forty-two billion, four hundred ninety-one million, nine hundred sixty-six thousand, one hundred three".