42871997868237 has 24 divisors (see below), whose sum is σ = 62150909219256. Its totient is φ = 28477632554496.

The previous prime is 42871997868221. The next prime is 42871997868247. The reversal of 42871997868237 is 73286879917824.

42871997868237 is a `hidden beast` number, since 4 + 287 + 19 + 97 + 8 + 6 + 8 + 237 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20156202868356 + 22715794999881 = 4489566^2 + 4766109^2 .

It is not a de Polignac number, because 42871997868237 - 2⁴ = 42871997868221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42871997868247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177523033 + ... + 177764369.

It is an arithmetic number, because the mean of its divisors is an integer number (2589621217469).

Almost surely, 2^{42871997868237} is an apocalyptic number.

It is an amenable number.

42871997868237 is a deficient number, since it is larger than the sum of its proper divisors (19278911351019).

42871997868237 is a wasteful number, since it uses less digits than its factorization.

42871997868237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312877 (or 312874 counting only the distinct ones).

The product of its digits is 4096770048, while the sum is 81.

The spelling of 42871997868237 in words is "forty-two trillion, eight hundred seventy-one billion, nine hundred ninety-seven million, eight hundred sixty-eight thousand, two hundred thirty-seven".