1258111271 has 8 divisors (see below), whose sum is σ = 1267038864. Its totient is φ = 1249205760.

The previous prime is 1258111249. The next prime is 1258111291. The reversal of 1258111271 is 1721118521.

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 1258111271 - 2⁶ = 1258111207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258111241) 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, 118535 + ... + 128711.

It is an arithmetic number, because the mean of its divisors is an integer number (158379858).

Almost surely, 2^1258111271 is an apocalyptic number.

1258111271 is a deficient number, since it is larger than the sum of its proper divisors (8927593).

1258111271 is a wasteful number, since it uses less digits than its factorization.

1258111271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041.

The product of its digits is 1120, while the sum is 29.

The square root of 1258111271 is about 35469.8642653168. The cubic root of 1258111271 is about 1079.5423503944.

Adding to 1258111271 its reverse (1721118521), we get a palindrome (2979229792).

The spelling of 1258111271 in words is "one billion, two hundred fifty-eight million, one hundred eleven thousand, two hundred seventy-one".