42147181395 has 144 divisors (see below), whose sum is σ = 84686314752. Its totient is φ = 19227404160.

The previous prime is 42147181367. The next prime is 42147181399. The reversal of 42147181395 is 59318174124.

42147181395 is a `hidden beast` number, since 42 + 1 + 47 + 181 + 395 = 666.

42147181395 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 42147181395 - 2⁹ = 42147180883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42147181395.

It is not an unprimeable number, because it can be changed into a prime (42147181399) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 29126562 + ... + 29128008.

It is an arithmetic number, because the mean of its divisors is an integer number (588099408).

Almost surely, 2^42147181395 is an apocalyptic number.

42147181395 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42147181395 is an abundant number, since it is smaller than the sum of its proper divisors (42539133357).

42147181395 is a wasteful number, since it uses less digits than its factorization.

42147181395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670 (or 1648 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 42147181395 in words is "forty-two billion, one hundred forty-seven million, one hundred eighty-one thousand, three hundred ninety-five".