1254442520321 has 4 divisors (see below), whose sum is σ = 1254447327792. Its totient is φ = 1254437712852.

The previous prime is 1254442520311. The next prime is 1254442520323. The reversal of 1254442520321 is 1230252444521.

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 not a de Polignac number, because 1254442520321 - 2¹⁸ = 1254442258177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254442520323) 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, 1988411 + ... + 2542176.

It is an arithmetic number, because the mean of its divisors is an integer number (313611831948).

Almost surely, 2^{1254442520321} is an apocalyptic number.

It is an amenable number.

1254442520321 is a deficient number, since it is larger than the sum of its proper divisors (4807471).

1254442520321 is an equidigital number, since it uses as much as digits as its factorization.

1254442520321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807470.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 1254442520321 its reverse (1230252444521), we get a palindrome (2484694964842).

The spelling of 1254442520321 in words is "one trillion, two hundred fifty-four billion, four hundred forty-two million, five hundred twenty thousand, three hundred twenty-one".