1260165120 has 384 divisors, whose sum is σ = 4528742400. Its totient is φ = 297271296.

The previous prime is 1260165107. The next prime is 1260165163. The reversal of 1260165120 is 215610621.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×1260165120² = 3176032259329228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9922497 + ... + 9922623.

It is an arithmetic number, because the mean of its divisors is an integer number (11793600).

Almost surely, 2^1260165120 is an apocalyptic number.

1260165120 is a gapful number since it is divisible by the number (10) 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 1260165120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264371200).

1260165120 is an abundant number, since it is smaller than the sum of its proper divisors (3268577280).

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

1260165120 is a wasteful number, since it uses less digits than its factorization.

1260165120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1260165120 is about 35498.8044869120. The cubic root of 1260165120 is about 1080.1294769323.

Adding to 1260165120 its reverse (215610621), we get a palindrome (1475775741).

The spelling of 1260165120 in words is "one billion, two hundred sixty million, one hundred sixty-five thousand, one hundred twenty".