1245326235421 has 4 divisors (see below), whose sum is σ = 1245332150272. Its totient is φ = 1245320320572.

The previous prime is 1245326235397. The next prime is 1245326235431.

1245326235421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245326235421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245326235431) 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, 2629491 + ... + 3066736.

It is an arithmetic number, because the mean of its divisors is an integer number (311333037568).

Almost surely, 2^{1245326235421} is an apocalyptic number.

It is an amenable number.

1245326235421 is a deficient number, since it is larger than the sum of its proper divisors (5914851).

1245326235421 is an equidigital number, since it uses as much as digits as its factorization.

1245326235421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914850.

The product of its digits is 345600, while the sum is 40.

The spelling of 1245326235421 in words is "one trillion, two hundred forty-five billion, three hundred twenty-six million, two hundred thirty-five thousand, four hundred twenty-one".