1020123130 has 64 divisors (see below), whose sum is σ = 2023183008. Its totient is φ = 368040960.

The previous prime is 1020123121. The next prime is 1020123151. The reversal of 1020123130 is 313210201.

It can be written as a sum of positive squares in 16 ways, for example, as 23409 + 1020099721 = 153^2 + 31939^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 1020123130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1561884 + ... + 1562536.

Almost surely, 2^1020123130 is an apocalyptic number.

1020123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020123130 is a deficient number, since it is larger than the sum of its proper divisors (1003059878).

1020123130 is a wasteful number, since it uses less digits than its factorization.

1020123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1020123130 is about 31939.3664620950. The cubic root of 1020123130 is about 1006.6632129808.

Adding to 1020123130 its reverse (313210201), we get a palindrome (1333333331).

The spelling of 1020123130 in words is "one billion, twenty million, one hundred twenty-three thousand, one hundred thirty".