1260103121 has 8 divisors (see below), whose sum is σ = 1343968200. Its totient is φ = 1177320448.

The previous prime is 1260103079. The next prime is 1260103127. The reversal of 1260103121 is 1213010621.

It can be written as a sum of positive squares in 4 ways, for example, as 406586896 + 853516225 = 20164^2 + 29215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1260103121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260103121.

It is not an unprimeable number, because it can be changed into a prime (1260103127) 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, 268196 + ... + 272853.

It is an arithmetic number, because the mean of its divisors is an integer number (167996025).

Almost surely, 2^1260103121 is an apocalyptic number.

It is an amenable number.

1260103121 is a deficient number, since it is larger than the sum of its proper divisors (83865079).

1260103121 is a wasteful number, since it uses less digits than its factorization.

1260103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541203.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1260103121 is about 35497.9312214106. The cubic root of 1260103121 is about 1080.1117628395. Note that the first 3 decimals are identical.

Adding to 1260103121 its reverse (1213010621), we get a palindrome (2473113742).

The spelling of 1260103121 in words is "one billion, two hundred sixty million, one hundred three thousand, one hundred twenty-one".