2142442 has 16 divisors (see below), whose sum is σ = 3461832. Its totient is φ = 990720.

The previous prime is 2142431. The next prime is 2142449. The reversal of 2142442 is 2442412.

It can be written as a sum of positive squares in 4 ways, for example, as 2013561 + 128881 = 1419^2 + 359^2 .

It is not an unprimeable number, because it can be changed into a prime (2142449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1558 + ... + 2590.

2^2142442 is an apocalyptic number.

2142442 is a deficient number, since it is larger than the sum of its proper divisors (1319390).

2142442 is a wasteful number, since it uses less digits than its factorization.

2142442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its digits is 512, while the sum is 19.

The square root of 2142442 is about 1463.7083042738. The cubic root of 2142442 is about 128.9148728275.

Adding to 2142442 its reverse (2442412), we get a palindrome (4584854).

The spelling of 2142442 in words is "two million, one hundred forty-two thousand, four hundred forty-two".