1245432420013 has 4 divisors (see below), whose sum is σ = 1318693150620. Its totient is φ = 1172171689408.

The previous prime is 1245432419999. The next prime is 1245432420017. The reversal of 1245432420013 is 3100242345421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 948993550569 + 296438869444 = 974163^2 + 544462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245432420013 - 2⁵ = 1245432419981 is a prime.

It is a super-2 number, since 2×1245432420013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245432420017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36630365278 + ... + 36630365311.

It is an arithmetic number, because the mean of its divisors is an integer number (329673287655).

Almost surely, 2^{1245432420013} is an apocalyptic number.

It is an amenable number.

1245432420013 is a deficient number, since it is larger than the sum of its proper divisors (73260730607).

1245432420013 is an equidigital number, since it uses as much as digits as its factorization.

1245432420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73260730606.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 1245432420013 its reverse (3100242345421), we get a palindrome (4345674765434).

The spelling of 1245432420013 in words is "one trillion, two hundred forty-five billion, four hundred thirty-two million, four hundred twenty thousand, thirteen".