1161242760 has 64 divisors (see below), whose sum is σ = 3667089600. Its totient is φ = 293366016.

The previous prime is 1161242759. The next prime is 1161242813. The reversal of 1161242760 is 672421611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252379 + ... + 256938.

It is an arithmetic number, because the mean of its divisors is an integer number (57298275).

Almost surely, 2^1161242760 is an apocalyptic number.

1161242760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161242760 is an abundant number, since it is smaller than the sum of its proper divisors (2505846840).

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

1161242760 is a wasteful number, since it uses less digits than its factorization.

1161242760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509350 (or 509346 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1161242760 is about 34077.0121929726. The cubic root of 1161242760 is about 1051.0926675254.

The spelling of 1161242760 in words is "one billion, one hundred sixty-one million, two hundred forty-two thousand, seven hundred sixty".