1254340434521 has 8 divisors (see below), whose sum is σ = 1254965052264. Its totient is φ = 1253715978240.

The previous prime is 1254340434511. The next prime is 1254340434547.

1254340434521 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 2154816400 + 1252185618121 = 46420^2 + 1119011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254340434521 - 2³⁰ = 1253266692697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254340434511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17304065 + ... + 17376401.

It is an arithmetic number, because the mean of its divisors is an integer number (156870631533).

Almost surely, 2^{1254340434521} is an apocalyptic number.

It is an amenable number.

1254340434521 is a deficient number, since it is larger than the sum of its proper divisors (624617743).

1254340434521 is an equidigital number, since it uses as much as digits as its factorization.

1254340434521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80731.

The product of its (nonzero) digits is 230400, while the sum is 38.

It can be divided in two parts, 1254340 and 434521, that added together give a palindrome (1688861).

The spelling of 1254340434521 in words is "one trillion, two hundred fifty-four billion, three hundred forty million, four hundred thirty-four thousand, five hundred twenty-one".