9787538042 has 4 divisors (see below), whose sum is σ = 14681307066. Its totient is φ = 4893769020.

The previous prime is 9787538041. The next prime is 9787538063. The reversal of 9787538042 is 2408357879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2408357879 = 47 ⋅51241657.

It can be written as a sum of positive squares in only one way, i.e., 9175915681 + 611622361 = 95791^2 + 24731^2 .

It is not an unprimeable number, because it can be changed into a prime (9787538041) 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 as a sum of consecutive naturals, namely, 2446884509 + ... + 2446884512.

Almost surely, 2^9787538042 is an apocalyptic number.

9787538042 is a deficient number, since it is larger than the sum of its proper divisors (4893769024).

9787538042 is a wasteful number, since it uses less digits than its factorization.

9787538042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893769023.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The square root of 9787538042 is about 98931.9869506319. The cubic root of 9787538042 is about 2139.0674920783.

The spelling of 9787538042 in words is "nine billion, seven hundred eighty-seven million, five hundred thirty-eight thousand, forty-two".