1121590 has 16 divisors (see below), whose sum is σ = 2054160. Its totient is φ = 440800.

The previous prime is 1121557. The next prime is 1121599. The reversal of 1121590 is 951211.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361 + ... + 1540.

It is an arithmetic number, because the mean of its divisors is an integer number (128385).

2^1121590 is an apocalyptic number.

1121590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121590 is a deficient number, since it is larger than the sum of its proper divisors (932570).

1121590 is a wasteful number, since it uses less digits than its factorization.

1121590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 1121590 is about 1059.0514623945. The cubic root of 1121590 is about 103.8990020478.

It can be divided in two parts, 1121 and 590, that added together give a triangular number (1711 = T₅₈).

The spelling of 1121590 in words is "one million, one hundred twenty-one thousand, five hundred ninety".