1259140149 has 6 divisors (see below), whose sum is σ = 1818758006. Its totient is φ = 839426760.

The previous prime is 1259140123. The next prime is 1259140151. The reversal of 1259140149 is 9410419521.

It is a happy number.

1259140149 is a `hidden beast` number, since 12 + 591 + 40 + 14 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1025600625 + 233539524 = 32025^2 + 15282^2 .

It is not a de Polignac number, because 1259140149 - 2⁵ = 1259140117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259140109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69952222 + ... + 69952239.

Almost surely, 2^1259140149 is an apocalyptic number.

It is an amenable number.

1259140149 is a deficient number, since it is larger than the sum of its proper divisors (559617857).

1259140149 is a wasteful number, since it uses less digits than its factorization.

1259140149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139904467 (or 139904464 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1259140149 is about 35484.3648527066. The cubic root of 1259140149 is about 1079.8365519110.

The spelling of 1259140149 in words is "one billion, two hundred fifty-nine million, one hundred forty thousand, one hundred forty-nine".