1250043061 has 2 divisors, whose sum is σ = 1250043062. Its totient is φ = 1250043060.

The previous prime is 1250043029. The next prime is 1250043083. The reversal of 1250043061 is 1603400521.

It is an a-pointer prime, because the next prime (1250043083) can be obtained adding 1250043061 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 912402436 + 337640625 = 30206^2 + 18375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250043061 - 2⁵ = 1250043029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1250043461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625021530 + 625021531.

It is an arithmetic number, because the mean of its divisors is an integer number (625021531).

Almost surely, 2^1250043061 is an apocalyptic number.

It is an amenable number.

1250043061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250043061 is an equidigital number, since it uses as much as digits as its factorization.

1250043061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1250043061 is about 35355.9480285849. The cubic root of 1250043061 is about 1077.2297144889.

Adding to 1250043061 its reverse (1603400521), we get a palindrome (2853443582).

The spelling of 1250043061 in words is "one billion, two hundred fifty million, forty-three thousand, sixty-one".