261124132 has 6 divisors (see below), whose sum is σ = 456967238. Its totient is φ = 130562064.

The previous prime is 261124117. The next prime is 261124141. The reversal of 261124132 is 231421162.

It can be written as a sum of positive squares in only one way, i.e., 255488256 + 5635876 = 15984^2 + 2374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32640513 + ... + 32640520.

Almost surely, 2^261124132 is an apocalyptic number.

It is an amenable number.

261124132 is a deficient number, since it is larger than the sum of its proper divisors (195843106).

261124132 is a wasteful number, since it uses less digits than its factorization.

261124132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65281037 (or 65281035 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 261124132 is about 16159.3357536750. The cubic root of 261124132 is about 639.1689506342.

Adding to 261124132 its reverse (231421162), we get a palindrome (492545294).

The spelling of 261124132 in words is "two hundred sixty-one million, one hundred twenty-four thousand, one hundred thirty-two".