2142122 has 4 divisors (see below), whose sum is σ = 3213186. Its totient is φ = 1071060.

The previous prime is 2142121. The next prime is 2142149. The reversal of 2142122 is 2212412.

2142122 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 can be written as a sum of positive squares in only one way, i.e., 1256641 + 885481 = 1121^2 + 941^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2142097 and 2142106.

It is not an unprimeable number, because it can be changed into a prime (2142121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535529 + ... + 535532.

2^2142122 is an apocalyptic number.

2142122 is a deficient number, since it is larger than the sum of its proper divisors (1071064).

2142122 is a wasteful number, since it uses less digits than its factorization.

2142122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071063.

The product of its digits is 64, while the sum is 14.

The square root of 2142122 is about 1463.5989887944. The cubic root of 2142122 is about 128.9084541686.

Adding to 2142122 its reverse (2212412), we get a palindrome (4354534).

The spelling of 2142122 in words is "two million, one hundred forty-two thousand, one hundred twenty-two".