42159853 has 2 divisors, whose sum is σ = 42159854. Its totient is φ = 42159852.

The previous prime is 42159827. The next prime is 42159869. The reversal of 42159853 is 35895124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40934404 + 1225449 = 6398^2 + 1107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42159853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42159353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21079926 + 21079927.

It is an arithmetic number, because the mean of its divisors is an integer number (21079927).

Almost surely, 2^42159853 is an apocalyptic number.

It is an amenable number.

42159853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42159853 is an equidigital number, since it uses as much as digits as its factorization.

42159853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 42159853 is about 6493.0619125340. The cubic root of 42159853 is about 348.0431008623.

It can be divided in two parts, 42 and 159853, that added together give a triangular number (159895 = T₅₆₅).

The spelling of 42159853 in words is "forty-two million, one hundred fifty-nine thousand, eight hundred fifty-three".