242686545 has 16 divisors (see below), whose sum is σ = 388566720. Its totient is φ = 129343424.

The previous prime is 242686519. The next prime is 242686553. The reversal of 242686545 is 545686242.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 242686545 - 2⁸ = 242686289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242686497 and 242686506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20902 + ... + 30368.

It is an arithmetic number, because the mean of its divisors is an integer number (24285420).

Almost surely, 2^242686545 is an apocalyptic number.

It is an amenable number.

242686545 is a deficient number, since it is larger than the sum of its proper divisors (145880175).

242686545 is a wasteful number, since it uses less digits than its factorization.

242686545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184.

The product of its digits is 460800, while the sum is 42.

The square root of 242686545 is about 15578.3999499307. The cubic root of 242686545 is about 623.7567134885.

The spelling of 242686545 in words is "two hundred forty-two million, six hundred eighty-six thousand, five hundred forty-five".