2133442 has 4 divisors (see below), whose sum is σ = 3200166. Its totient is φ = 1066720.

The previous prime is 2133433. The next prime is 2133463. The reversal of 2133442 is 2443312.

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., 2128681 + 4761 = 1459^2 + 69^2 .

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, 533359 + ... + 533362.

2^2133442 is an apocalyptic number.

2133442 is a deficient number, since it is larger than the sum of its proper divisors (1066724).

2133442 is a wasteful number, since it uses less digits than its factorization.

2133442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066723.

The product of its digits is 576, while the sum is 19.

The square root of 2133442 is about 1460.6306856971. The cubic root of 2133442 is about 128.7341036710.

Adding to 2133442 its reverse (2443312), we get a palindrome (4576754).

It can be divided in two parts, 213 and 3442, that added together give a triangular number (3655 = T₈₅).

The spelling of 2133442 in words is "two million, one hundred thirty-three thousand, four hundred forty-two".