261242162 has 8 divisors (see below), whose sum is σ = 414914076. Its totient is φ = 122937472.

The previous prime is 261242129. The next prime is 261242167.

261242162 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 261113281 + 128881 = 16159^2 + 359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (261242167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3841763 + ... + 3841830.

Almost surely, 2^261242162 is an apocalyptic number.

261242162 is a deficient number, since it is larger than the sum of its proper divisors (153671914).

261242162 is a wasteful number, since it uses less digits than its factorization.

261242162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683612.

The product of its digits is 2304, while the sum is 26.

The square root of 261242162 is about 16162.9874095107. The cubic root of 261242162 is about 639.2652391272.

The spelling of 261242162 in words is "two hundred sixty-one million, two hundred forty-two thousand, one hundred sixty-two".