1102920 has 128 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 230400.

The previous prime is 1102903. The next prime is 1102921. The reversal of 1102920 is 292011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1102920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10870 + ... + 10970.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2^1102920 is an apocalyptic number.

1102920 is a gapful number since it is divisible by the number (10) 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 1102920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1102920 is an abundant number, since it is smaller than the sum of its proper divisors (3009720).

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

1102920 is a wasteful number, since it uses less digits than its factorization.

1102920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1102920 is about 1050.1999809560. The cubic root of 1102920 is about 103.3192719912.

Adding to 1102920 its reverse (292011), we get a palindrome (1394931).

The spelling of 1102920 in words is "one million, one hundred two thousand, nine hundred twenty".