1021104 has 60 divisors (see below), whose sum is σ = 3269136. Its totient is φ = 291456.

The previous prime is 1021093. The next prime is 1021123. The reversal of 1021104 is 4011201.

It is a happy number.

1021104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502 + ... + 1514.

2^1021104 is an apocalyptic number.

1021104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1634568).

1021104 is an abundant number, since it is smaller than the sum of its proper divisors (2248032).

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

1021104 is a wasteful number, since it uses less digits than its factorization.

1021104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1021104 is about 1010.4969074668. The cubic root of 1021104 is about 100.6985752295.

Adding to 1021104 its reverse (4011201), we get a palindrome (5032305).

The spelling of 1021104 in words is "one million, twenty-one thousand, one hundred four".