1438242 has 16 divisors (see below), whose sum is σ = 3097920. Its totient is φ = 442512.

The previous prime is 1438237. The next prime is 1438253. The reversal of 1438242 is 2428341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9142 + ... + 9297.

It is an arithmetic number, because the mean of its divisors is an integer number (193620).

2^1438242 is an apocalyptic number.

1438242 is an abundant number, since it is smaller than the sum of its proper divisors (1659678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1438242 is a wasteful number, since it uses less digits than its factorization.

1438242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18457.

The product of its digits is 1536, while the sum is 24.

The square root of 1438242 is about 1199.2672762983. The cubic root of 1438242 is about 112.8783508263.

Subtracting 1438242 from its reverse (2428341), we obtain a palindrome (990099).

It can be divided in two parts, 143 and 8242, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 1438242 in words is "one million, four hundred thirty-eight thousand, two hundred forty-two".