3105142 has 4 divisors (see below), whose sum is σ = 4657716. Its totient is φ = 1552570.

The previous prime is 3105131. The next prime is 3105143. The reversal of 3105142 is 2415013.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105143) 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, 776284 + ... + 776287.

It is an arithmetic number, because the mean of its divisors is an integer number (1164429).

Almost surely, 2^3105142 is an apocalyptic number.

3105142 is a deficient number, since it is larger than the sum of its proper divisors (1552574).

3105142 is a wasteful number, since it uses less digits than its factorization.

3105142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552573.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3105142 is about 1762.1413110191. The cubic root of 3105142 is about 145.8905478541.

The spelling of 3105142 in words is "three million, one hundred five thousand, one hundred forty-two".