1254136449 has 8 divisors (see below), whose sum is σ = 1672385472. Its totient is φ = 835989200.

The previous prime is 1254136447. The next prime is 1254136501. The reversal of 1254136449 is 9446314521.

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 1254136449 - 2¹ = 1254136447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254136441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10612 + ... + 51194.

It is an arithmetic number, because the mean of its divisors is an integer number (209048184).

Almost surely, 2^1254136449 is an apocalyptic number.

It is an amenable number.

1254136449 is a deficient number, since it is larger than the sum of its proper divisors (418249023).

1254136449 is a wasteful number, since it uses less digits than its factorization.

1254136449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50887.

The product of its digits is 103680, while the sum is 39.

The square root of 1254136449 is about 35413.7889670111. The cubic root of 1254136449 is about 1078.4042646377.

The spelling of 1254136449 in words is "one billion, two hundred fifty-four million, one hundred thirty-six thousand, four hundred forty-nine".