1121598 has 12 divisors (see below), whose sum is σ = 2430168. Its totient is φ = 373860.

The previous prime is 1121557. The next prime is 1121599. The reversal of 1121598 is 8951211.

It is a super-3 number, since 3×1121598³ = 4232850533370297576, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121599) 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 in 5 ways as a sum of consecutive naturals, for example, 31138 + ... + 31173.

It is an arithmetic number, because the mean of its divisors is an integer number (202514).

2^1121598 is an apocalyptic number.

1121598 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1121598 is an abundant number, since it is smaller than the sum of its proper divisors (1308570).

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

1121598 is a wasteful number, since it uses less digits than its factorization.

1121598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62319 (or 62316 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1121598 is about 1059.0552393525. The cubic root of 1121598 is about 103.8992490751.

It can be divided in two parts, 11 and 21598, that added together give a square (21609 = 147²).

The spelling of 1121598 in words is "one million, one hundred twenty-one thousand, five hundred ninety-eight".