42087151 has 2 divisors, whose sum is σ = 42087152. Its totient is φ = 42087150.

The previous prime is 42087061. The next prime is 42087169. The reversal of 42087151 is 15178024.

42087151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42087151 is a prime.

It is equal to p_2552563 and since 42087151 and 2552563 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42087191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21043575 + 21043576.

It is an arithmetic number, because the mean of its divisors is an integer number (21043576).

Almost surely, 2^42087151 is an apocalyptic number.

42087151 is a deficient number, since it is larger than the sum of its proper divisors (1).

42087151 is an equidigital number, since it uses as much as digits as its factorization.

42087151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 42087151 is about 6487.4610596134. The cubic root of 42087151 is about 347.8429263172.

It can be divided in two parts, 420 and 87151, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 42087151 in words is "forty-two million, eighty-seven thousand, one hundred fifty-one".