1121634 has 16 divisors (see below), whose sum is σ = 2492640. Its totient is φ = 373860.

The previous prime is 1121629. The next prime is 1121651. The reversal of 1121634 is 4361211.

It is a happy number.

1121634 is a `hidden beast` number, since 11 + 21 + 634 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 10332 + ... + 10439.

It is an arithmetic number, because the mean of its divisors is an integer number (155790).

2^1121634 is an apocalyptic number.

1121634 is an abundant number, since it is smaller than the sum of its proper divisors (1371006).

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

1121634 is a wasteful number, since it uses less digits than its factorization.

1121634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20782 (or 20776 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1121634 is about 1059.0722354967. The cubic root of 1121634 is about 103.9003606834.

Adding to 1121634 its reverse (4361211), we get a palindrome (5482845).

The spelling of 1121634 in words is "one million, one hundred twenty-one thousand, six hundred thirty-four".