1245523004530 has 128 divisors (see below), whose sum is σ = 2873147645952. Its totient is φ = 378703531008.

The previous prime is 1245523004521. The next prime is 1245523004533. The reversal of 1245523004530 is 354003255421.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1245523004533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1494187 + ... + 2173393.

It is an arithmetic number, because the mean of its divisors is an integer number (22446465984).

Almost surely, 2^{1245523004530} is an apocalyptic number.

1245523004530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245523004530 is an abundant number, since it is smaller than the sum of its proper divisors (1627624641422).

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

1245523004530 is a wasteful number, since it uses less digits than its factorization.

1245523004530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679328.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 1245523004530 its reverse (354003255421), we get a palindrome (1599526259951).

The spelling of 1245523004530 in words is "one trillion, two hundred forty-five billion, five hundred twenty-three million, four thousand, five hundred thirty".