1260111132 has 144 divisors (see below), whose sum is σ = 3785745600. Its totient is φ = 345784320.

The previous prime is 1260111121. The next prime is 1260111163. The reversal of 1260111132 is 2311110621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1965532 + ... + 1966172.

It is an arithmetic number, because the mean of its divisors is an integer number (26289900).

Almost surely, 2^1260111132 is an apocalyptic number.

1260111132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1260111132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1892872800).

1260111132 is an abundant number, since it is smaller than the sum of its proper divisors (2525634468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1260111132 is a wasteful number, since it uses less digits than its factorization.

1260111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1260111132 is about 35498.0440587929. The cubic root of 1260111132 is about 1080.1140517413.

Adding to 1260111132 its reverse (2311110621), we get a palindrome (3571221753).

The spelling of 1260111132 in words is "one billion, two hundred sixty million, one hundred eleven thousand, one hundred thirty-two".