242690919 has 8 divisors (see below), whose sum is σ = 323660400. Its totient is φ = 161757696.

The previous prime is 242690911. The next prime is 242690927. The reversal of 242690919 is 919096242.

It is an interprime number because it is at equal distance from previous prime (242690911) and next prime (242690927).

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

It is not a de Polignac number, because 242690919 - 2³ = 242690911 is a prime.

It is a super-2 number, since 2×242690919² = 117797764330129122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242690911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18759 + ... + 28935.

It is an arithmetic number, because the mean of its divisors is an integer number (40457550).

Almost surely, 2^242690919 is an apocalyptic number.

242690919 is a deficient number, since it is larger than the sum of its proper divisors (80969481).

242690919 is a wasteful number, since it uses less digits than its factorization.

242690919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18129.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 242690919 is about 15578.5403359878. The cubic root of 242690919 is about 623.7604608401.

The spelling of 242690919 in words is "two hundred forty-two million, six hundred ninety thousand, nine hundred nineteen".