5811142 has 4 divisors (see below), whose sum is σ = 8716716. Its totient is φ = 2905570.

The previous prime is 5811121. The next prime is 5811163. The reversal of 5811142 is 2411185.

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

It is an interprime number because it is at equal distance from previous prime (5811121) and next prime (5811163).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452784 + ... + 1452787.

It is an arithmetic number, because the mean of its divisors is an integer number (2179179).

Almost surely, 2^5811142 is an apocalyptic number.

5811142 is a deficient number, since it is larger than the sum of its proper divisors (2905574).

5811142 is a wasteful number, since it uses less digits than its factorization.

5811142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905573.

The product of its digits is 320, while the sum is 22.

The square root of 5811142 is about 2410.6310377161. The cubic root of 5811142 is about 179.7851551897.

The spelling of 5811142 in words is "five million, eight hundred eleven thousand, one hundred forty-two".