260406242 has 4 divisors (see below), whose sum is σ = 390609366. Its totient is φ = 130203120.

The previous prime is 260406241. The next prime is 260406247. The reversal of 260406242 is 242604062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242604062 = 2 ⋅121302031.

It can be written as a sum of positive squares in only one way, i.e., 258920281 + 1485961 = 16091^2 + 1219^2 .

It is a super-2 number, since 2×260406242² = 135622821745125128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (260406241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65101559 + ... + 65101562.

Almost surely, 2^260406242 is an apocalyptic number.

260406242 is a deficient number, since it is larger than the sum of its proper divisors (130203124).

260406242 is a wasteful number, since it uses less digits than its factorization.

260406242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130203123.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 260406242 is about 16137.1076094819. The cubic root of 260406242 is about 638.5826724592.

The spelling of 260406242 in words is "two hundred sixty million, four hundred six thousand, two hundred forty-two".