1061165240 has 32 divisors (see below), whose sum is σ = 2388929760. Its totient is φ = 424233600.

The previous prime is 1061165227. The next prime is 1061165251. The reversal of 1061165240 is 425611601.

It is a super-2 number, since 2×1061165240² = 2252143333168515200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79445 + ... + 91835.

It is an arithmetic number, because the mean of its divisors is an integer number (74654055).

Almost surely, 2^1061165240 is an apocalyptic number.

1061165240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061165240 is an abundant number, since it is smaller than the sum of its proper divisors (1327764520).

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

1061165240 is a wasteful number, since it uses less digits than its factorization.

1061165240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14543 (or 14539 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1061165240 is about 32575.5313080232. The cubic root of 1061165240 is about 1019.9862999570.

Adding to 1061165240 its reverse (425611601), we get a palindrome (1486776841).

The spelling of 1061165240 in words is "one billion, sixty-one million, one hundred sixty-five thousand, two hundred forty".