42293155 has 4 divisors (see below), whose sum is σ = 50751792. Its totient is φ = 33834520.

The previous prime is 42293143. The next prime is 42293177. The reversal of 42293155 is 55139224.

42293155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42293155 - 2¹¹ = 42291107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4229311 + ... + 4229320.

It is an arithmetic number, because the mean of its divisors is an integer number (12687948).

Almost surely, 2^42293155 is an apocalyptic number.

42293155 is a deficient number, since it is larger than the sum of its proper divisors (8458637).

42293155 is an equidigital number, since it uses as much as digits as its factorization.

42293155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8458636.

The product of its digits is 10800, while the sum is 31.

The square root of 42293155 is about 6503.3187681368. The cubic root of 42293155 is about 348.4095318499.

The spelling of 42293155 in words is "forty-two million, two hundred ninety-three thousand, one hundred fifty-five".