242489691 has 6 divisors (see below), whose sum is σ = 350262900. Its totient is φ = 161659788.

The previous prime is 242489671. The next prime is 242489743. The reversal of 242489691 is 196984242.

It is not a de Polignac number, because 242489691 - 2⁶ = 242489627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242489671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13471641 + ... + 13471658.

It is an arithmetic number, because the mean of its divisors is an integer number (58377150).

Almost surely, 2^242489691 is an apocalyptic number.

242489691 is a deficient number, since it is larger than the sum of its proper divisors (107773209).

242489691 is a wasteful number, since it uses less digits than its factorization.

242489691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26943305 (or 26943302 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 242489691 is about 15572.0804968379. The cubic root of 242489691 is about 623.5880154684.

The spelling of 242489691 in words is "two hundred forty-two million, four hundred eighty-nine thousand, six hundred ninety-one".