1121438 has 4 divisors (see below), whose sum is σ = 1682160. Its totient is φ = 560718.

The previous prime is 1121431. The next prime is 1121443. The reversal of 1121438 is 8341211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280358 + ... + 280361.

It is an arithmetic number, because the mean of its divisors is an integer number (420540).

2^1121438 is an apocalyptic number.

1121438 is a deficient number, since it is larger than the sum of its proper divisors (560722).

1121438 is an equidigital number, since it uses as much as digits as its factorization.

1121438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560721.

The product of its digits is 192, while the sum is 20.

The square root of 1121438 is about 1058.9796976335. The cubic root of 1121438 is about 103.8943083060.

Adding to 1121438 its reverse (8341211), we get a palindrome (9462649).

The spelling of 1121438 in words is "one million, one hundred twenty-one thousand, four hundred thirty-eight".