1121398 has 8 divisors (see below), whose sum is σ = 1689120. Its totient is φ = 558360.

The previous prime is 1121389. The next prime is 1121423. The reversal of 1121398 is 8931211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493 + ... + 1576.

It is an arithmetic number, because the mean of its divisors is an integer number (211140).

2^1121398 is an apocalyptic number.

1121398 is a deficient number, since it is larger than the sum of its proper divisors (567722).

1121398 is a wasteful number, since it uses less digits than its factorization.

1121398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342.

The product of its digits is 432, while the sum is 25.

The square root of 1121398 is about 1058.9608113618. The cubic root of 1121398 is about 103.8930730402.

It can be divided in two parts, 11213 and 98, that added together give a palindrome (11311).

The spelling of 1121398 in words is "one million, one hundred twenty-one thousand, three hundred ninety-eight".