1253123300 has 72 divisors (see below), whose sum is σ = 3194712192. Its totient is φ = 420624000.

The previous prime is 1253123297. The next prime is 1253123327. The reversal of 1253123300 is 33213521.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 23 ways as a sum of consecutive naturals, for example, 29516 + ... + 58115.

Almost surely, 2^1253123300 is an apocalyptic number.

1253123300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253123300 is an abundant number, since it is smaller than the sum of its proper divisors (1941588892).

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

1253123300 is a wasteful number, since it uses less digits than its factorization.

1253123300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87669 (or 87662 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1253123300 is about 35399.4816346228. The cubic root of 1253123300 is about 1078.1137915799.

Adding to 1253123300 its reverse (33213521), we get a palindrome (1286336821).

The spelling of 1253123300 in words is "one billion, two hundred fifty-three million, one hundred twenty-three thousand, three hundred".