261412 has 6 divisors (see below), whose sum is σ = 457478. Its totient is φ = 130704.

The previous prime is 261407. The next prime is 261427. The reversal of 261412 is 214162.

It can be written as a sum of positive squares in only one way, i.e., 254016 + 7396 = 504^2 + 86^2 .

It is a nialpdrome in base 8.

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, 32673 + ... + 32680.

2²⁶¹⁴¹² is an apocalyptic number.

It is an amenable number.

261412 is a deficient number, since it is larger than the sum of its proper divisors (196066).

261412 is a wasteful number, since it uses less digits than its factorization.

261412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65357 (or 65355 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 261412 is about 511.2846565271. The cubic root of 261412 is about 63.9403741541.

Adding to 261412 its reverse (214162), we get a palindrome (475574).

The spelling of 261412 in words is "two hundred sixty-one thousand, four hundred twelve".