42237155 has 4 divisors (see below), whose sum is σ = 50684592. Its totient is φ = 33789720.

The previous prime is 42237109. The next prime is 42237157. The reversal of 42237155 is 55173224.

It is a happy number.

42237155 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 42237155 - 2⁸ = 42236899 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (42237157) 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 in 3 ways as a sum of consecutive naturals, for example, 4223711 + ... + 4223720.

It is an arithmetic number, because the mean of its divisors is an integer number (12671148).

Almost surely, 2^42237155 is an apocalyptic number.

42237155 is a deficient number, since it is larger than the sum of its proper divisors (8447437).

42237155 is an equidigital number, since it uses as much as digits as its factorization.

42237155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447436.

The product of its digits is 8400, while the sum is 29.

The square root of 42237155 is about 6499.0118479658. The cubic root of 42237155 is about 348.2556885819.

The spelling of 42237155 in words is "forty-two million, two hundred thirty-seven thousand, one hundred fifty-five".