1120902090 has 128 divisors (see below), whose sum is σ = 3363655680. Its totient is φ = 232243200.

The previous prime is 1120902073. The next prime is 1120902091. The reversal of 1120902090 is 902090211.

It is a self number, because there is not a number n which added to its sum of digits gives 1120902090.

It is not an unprimeable number, because it can be changed into a prime (1120902091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1457226 + ... + 1457994.

It is an arithmetic number, because the mean of its divisors is an integer number (26278560).

Almost surely, 2^1120902090 is an apocalyptic number.

1120902090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120902090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681827840).

1120902090 is an abundant number, since it is smaller than the sum of its proper divisors (2242753590).

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

1120902090 is a wasteful number, since it uses less digits than its factorization.

1120902090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1120902090 is about 33479.8758958273. The cubic root of 1120902090 is about 1038.7775608455. Note that the first 3 decimals are identical.

The spelling of 1120902090 in words is "one billion, one hundred twenty million, nine hundred two thousand, ninety".