242968551 has 16 divisors (see below), whose sum is σ = 376309248. Its totient is φ = 136562400.

The previous prime is 242968547. The next prime is 242968559. The reversal of 242968551 is 155869242.

It is not a de Polignac number, because 242968551 - 2² = 242968547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242968559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93555 + ... + 96116.

It is an arithmetic number, because the mean of its divisors is an integer number (23519328).

Almost surely, 2^242968551 is an apocalyptic number.

242968551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

242968551 is a deficient number, since it is larger than the sum of its proper divisors (133340697).

242968551 is a wasteful number, since it uses less digits than its factorization.

242968551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189742.

The product of its digits is 172800, while the sum is 42.

The square root of 242968551 is about 15587.4485083352. The cubic root of 242968551 is about 623.9982253607.

The spelling of 242968551 in words is "two hundred forty-two million, nine hundred sixty-eight thousand, five hundred fifty-one".