1245530355421 has 16 divisors (see below), whose sum is σ = 1379846059200. Its totient is φ = 1124154110640.

The previous prime is 1245530355413. The next prime is 1245530355463.

1245530355421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1245530355421 - 2³ = 1245530355413 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 (1245530355401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3181126 + ... + 3551143.

It is an arithmetic number, because the mean of its divisors is an integer number (86240378700).

Almost surely, 2^{1245530355421} is an apocalyptic number.

1245530355421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1245530355421 is a deficient number, since it is larger than the sum of its proper divisors (134315703779).

1245530355421 is an equidigital number, since it uses as much as digits as its factorization.

1245530355421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732441 (or 6732419 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 1245530355421 in words is "one trillion, two hundred forty-five billion, five hundred thirty million, three hundred fifty-five thousand, four hundred twenty-one".