42171206278 has 8 divisors (see below), whose sum is σ = 63274425768. Its totient is φ = 21079731024.

The previous prime is 42171206257. The next prime is 42171206293. The reversal of 42171206278 is 87260217124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42171206278² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42171206278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927076 + ... + 2941447.

It is an arithmetic number, because the mean of its divisors is an integer number (7909303221).

Almost surely, 2^42171206278 is an apocalyptic number.

42171206278 is a deficient number, since it is larger than the sum of its proper divisors (21103219490).

42171206278 is a wasteful number, since it uses less digits than its factorization.

42171206278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872118.

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 42171206278 in words is "forty-two billion, one hundred seventy-one million, two hundred six thousand, two hundred seventy-eight".