1000123130 has 32 divisors (see below), whose sum is σ = 1813114368. Its totient is φ = 397196800.

The previous prime is 1000123123. The next prime is 1000123133. The reversal of 1000123130 is 313210001.

It is not an unprimeable number, because it can be changed into a prime (1000123133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097375 + ... + 1098285.

It is an arithmetic number, because the mean of its divisors is an integer number (56659824).

Almost surely, 2^1000123130 is an apocalyptic number.

1000123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000123130 is a deficient number, since it is larger than the sum of its proper divisors (812991238).

1000123130 is a wasteful number, since it uses less digits than its factorization.

1000123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1000123130 is about 31624.7233979999. The cubic root of 1000123130 is about 1000.0410416489.

Adding to 1000123130 its reverse (313210001), we get a palindrome (1313333131).

The spelling of 1000123130 in words is "one billion, one hundred twenty-three thousand, one hundred thirty".