42185153 has 2 divisors, whose sum is σ = 42185154. Its totient is φ = 42185152.

The previous prime is 42185123. The next prime is 42185159. The reversal of 42185153 is 35158124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24275329 + 17909824 = 4927^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 42185153 - 2⁶ = 42185089 is a prime.

It is not a weakly prime, because it can be changed into another prime (42185159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21092576 + 21092577.

It is an arithmetic number, because the mean of its divisors is an integer number (21092577).

Almost surely, 2^42185153 is an apocalyptic number.

It is an amenable number.

42185153 is a deficient number, since it is larger than the sum of its proper divisors (1).

42185153 is an equidigital number, since it uses as much as digits as its factorization.

42185153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 42185153 is about 6495.0098537262. The cubic root of 42185153 is about 348.1127068107.

The spelling of 42185153 in words is "forty-two million, one hundred eighty-five thousand, one hundred fifty-three".