4142155 has 4 divisors (see below), whose sum is σ = 4970592. Its totient is φ = 3313720.

The previous prime is 4142129. The next prime is 4142161. The reversal of 4142155 is 5512414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5512414 = 2 ⋅2756207.

It is not a de Polignac number, because 4142155 - 2⁷ = 4142027 is a prime.

It is a Duffinian number.

4142155 is a lucky 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, 414211 + ... + 414220.

It is an arithmetic number, because the mean of its divisors is an integer number (1242648).

Almost surely, 2^4142155 is an apocalyptic number.

4142155 is a deficient number, since it is larger than the sum of its proper divisors (828437).

4142155 is an equidigital number, since it uses as much as digits as its factorization.

4142155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828436.

The product of its digits is 800, while the sum is 22.

The square root of 4142155 is about 2035.2284884012. The cubic root of 4142155 is about 160.5987332583.

Adding to 4142155 its reverse (5512414), we get a palindrome (9654569).

The spelling of 4142155 in words is "four million, one hundred forty-two thousand, one hundred fifty-five".