1145212503 has 16 divisors (see below), whose sum is σ = 1552231296. Its totient is φ = 750916640.

The previous prime is 1145212427. The next prime is 1145212511. The reversal of 1145212503 is 3052125411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1145212503 - 2²² = 1141018199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145212543) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46393 + ... + 66653.

It is an arithmetic number, because the mean of its divisors is an integer number (97014456).

Almost surely, 2^1145212503 is an apocalyptic number.

1145212503 is a deficient number, since it is larger than the sum of its proper divisors (407018793).

1145212503 is a wasteful number, since it uses less digits than its factorization.

1145212503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20574.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1145212503 is about 33840.9885050659. The cubic root of 1145212503 is about 1046.2336728595.

Adding to 1145212503 its reverse (3052125411), we get a palindrome (4197337914).

The spelling of 1145212503 in words is "one billion, one hundred forty-five million, two hundred twelve thousand, five hundred three".