1253003004 has 72 divisors (see below), whose sum is σ = 3476124288. Its totient is φ = 377404320.

The previous prime is 1253002997. The next prime is 1253003021. The reversal of 1253003004 is 4003003521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 56659 + ... + 75605.

It is an arithmetic number, because the mean of its divisors is an integer number (48279504).

Almost surely, 2^1253003004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253003004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738062144).

1253003004 is an abundant number, since it is smaller than the sum of its proper divisors (2223121284).

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

1253003004 is a wasteful number, since it uses less digits than its factorization.

1253003004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19135 (or 19130 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1253003004 is about 35397.7824729177. The cubic root of 1253003004 is about 1078.0792919349.

Adding to 1253003004 its reverse (4003003521), we get a palindrome (5256006525).

The spelling of 1253003004 in words is "one billion, two hundred fifty-three million, three thousand, four".