42172057293427 has 2 divisors, whose sum is σ = 42172057293428. Its totient is φ = 42172057293426.

The previous prime is 42172057293403. The next prime is 42172057293451. The reversal of 42172057293427 is 72439275027124.

It is a balanced prime because it is at equal distance from previous prime (42172057293403) and next prime (42172057293451).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42172057293427 is a prime.

It is not a weakly prime, because it can be changed into another prime (42172057693427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21086028646713 + 21086028646714.

It is an arithmetic number, because the mean of its divisors is an integer number (21086028646714).

Almost surely, 2^{42172057293427} is an apocalyptic number.

42172057293427 is a deficient number, since it is larger than the sum of its proper divisors (1).

42172057293427 is an equidigital number, since it uses as much as digits as its factorization.

42172057293427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 55.

The spelling of 42172057293427 in words is "forty-two trillion, one hundred seventy-two billion, fifty-seven million, two hundred ninety-three thousand, four hundred twenty-seven".