2142142 has 8 divisors (see below), whose sum is σ = 3222432. Its totient is φ = 1068000.

The previous prime is 2142121. The next prime is 2142149. The reversal of 2142142 is 2412412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142149) 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, 534 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (402804).

2^2142142 is an apocalyptic number.

2142142 is a deficient number, since it is larger than the sum of its proper divisors (1080290).

2142142 is a wasteful number, since it uses less digits than its factorization.

2142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074.

The product of its digits is 128, while the sum is 16.

The square root of 2142142 is about 1463.6058212511. The cubic root of 2142142 is about 128.9088553535.

Adding to 2142142 its reverse (2412412), we get a palindrome (4554554).

The spelling of 2142142 in words is "two million, one hundred forty-two thousand, one hundred forty-two".