2391442 has 4 divisors (see below), whose sum is σ = 3587166. Its totient is φ = 1195720.

The previous prime is 2391439. The next prime is 2391449. The reversal of 2391442 is 2441932.

2391442 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., 1490841 + 900601 = 1221^2 + 949^2 .

It is a super-3 number, since 3×2391442³ = 41029933369914968664, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2391449) 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, 597859 + ... + 597862.

2^2391442 is an apocalyptic number.

2391442 is a deficient number, since it is larger than the sum of its proper divisors (1195724).

2391442 is a wasteful number, since it uses less digits than its factorization.

2391442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195723.

The product of its digits is 1728, while the sum is 25.

The square root of 2391442 is about 1546.4287891785. The cubic root of 2391442 is about 133.7272613978.

It can be divided in two parts, 239 and 1442, that added together give a square (1681 = 41²).

The spelling of 2391442 in words is "two million, three hundred ninety-one thousand, four hundred forty-two".