4245201212520 has 32 divisors (see below), whose sum is σ = 12735603637920. Its totient is φ = 1132053656640.

The previous prime is 4245201212519. The next prime is 4245201212531. The reversal of 4245201212520 is 252121025424.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17688338266 + ... + 17688338505.

It is an arithmetic number, because the mean of its divisors is an integer number (397987613685).

Almost surely, 2^{4245201212520} is an apocalyptic number.

4245201212520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4245201212520 is an abundant number, since it is smaller than the sum of its proper divisors (8490402425400).

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

4245201212520 is a wasteful number, since it uses less digits than its factorization.

4245201212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35376676785 (or 35376676781 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 4245201212520 its reverse (252121025424), we get a palindrome (4497322237944).

The spelling of 4245201212520 in words is "four trillion, two hundred forty-five billion, two hundred one million, two hundred twelve thousand, five hundred twenty".