1254242065 has 16 divisors (see below), whose sum is σ = 1594570320. Its totient is φ = 943810560.

The previous prime is 1254242063. The next prime is 1254242147. The reversal of 1254242065 is 5602424521.

It can be written as a sum of positive squares in 8 ways, for example, as 28121809 + 1226120256 = 5303^2 + 35016^2 .

It is not a de Polignac number, because 1254242065 - 2¹ = 1254242063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254242063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190651 + ... + 197119.

It is an arithmetic number, because the mean of its divisors is an integer number (99660645).

Almost surely, 2^1254242065 is an apocalyptic number.

It is an amenable number.

1254242065 is a deficient number, since it is larger than the sum of its proper divisors (340328255).

1254242065 is a wasteful number, since it uses less digits than its factorization.

1254242065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1254242065 is about 35415.2801061915. The cubic root of 1254242065 is about 1078.4345360774.

Adding to 1254242065 its reverse (5602424521), we get a palindrome (6856666586).

The spelling of 1254242065 in words is "one billion, two hundred fifty-four million, two hundred forty-two thousand, sixty-five".