1123428490 has 16 divisors (see below), whose sum is σ = 2037610080. Its totient is φ = 445940560.

The previous prime is 1123428487. The next prime is 1123428503. The reversal of 1123428490 is 948243211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427480 + ... + 430099.

It is an arithmetic number, because the mean of its divisors is an integer number (127350630).

Almost surely, 2^1123428490 is an apocalyptic number.

1123428490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123428490 is a deficient number, since it is larger than the sum of its proper divisors (914181590).

1123428490 is a wasteful number, since it uses less digits than its factorization.

1123428490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857717.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1123428490 is about 33517.5847876902. The cubic root of 1123428490 is about 1039.5574084438.

The spelling of 1123428490 in words is "one billion, one hundred twenty-three million, four hundred twenty-eight thousand, four hundred ninety".