249121060 has 24 divisors (see below), whose sum is σ = 553928760. Its totient is φ = 93786624.

The previous prime is 249121051. The next prime is 249121099. The reversal of 249121060 is 60121942.

It can be written as a sum of positive squares in 4 ways, for example, as 23580736 + 225540324 = 4856^2 + 15018^2 .

It is a super-2 number, since 2×249121060² = 124122605071047200, which contains 22 as substring.

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, 366015 + ... + 366694.

It is an arithmetic number, because the mean of its divisors is an integer number (23080365).

Almost surely, 2^249121060 is an apocalyptic number.

249121060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249121060 is an abundant number, since it is smaller than the sum of its proper divisors (304807700).

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

249121060 is a wasteful number, since it uses less digits than its factorization.

249121060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732735 (or 732733 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 249121060 is about 15783.5693048182. The cubic root of 249121060 is about 629.2213947296.

The spelling of 249121060 in words is "two hundred forty-nine million, one hundred twenty-one thousand, sixty".