1258102261 has 8 divisors (see below), whose sum is σ = 1387925784. Its totient is φ = 1132999680.

The previous prime is 1258102229. The next prime is 1258102267. The reversal of 1258102261 is 1622018521.

It can be written as a sum of positive squares in 4 ways, for example, as 87778161 + 1170324100 = 9369^2 + 34210^2 .

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 1258102261 - 2⁵ = 1258102229 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 (1258102267) 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, 1179676 + ... + 1180741.

It is an arithmetic number, because the mean of its divisors is an integer number (173490723).

Almost surely, 2^1258102261 is an apocalyptic number.

It is an amenable number.

1258102261 is a deficient number, since it is larger than the sum of its proper divisors (129823523).

1258102261 is a wasteful number, since it uses less digits than its factorization.

1258102261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360471.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1258102261 is about 35469.7372558636. The cubic root of 1258102261 is about 1079.5397733304.

The spelling of 1258102261 in words is "one billion, two hundred fifty-eight million, one hundred two thousand, two hundred sixty-one".