242241551 has 8 divisors (see below), whose sum is σ = 260839440. Its totient is φ = 224126848.

The previous prime is 242241547. The next prime is 242241569. The reversal of 242241551 is 155142242.

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

It is a cyclic number.

It is not a de Polignac number, because 242241551 - 2² = 242241547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242241551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242241851) 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, 119756 + ... + 121761.

It is an arithmetic number, because the mean of its divisors is an integer number (32604930).

Almost surely, 2^242241551 is an apocalyptic number.

242241551 is a deficient number, since it is larger than the sum of its proper divisors (18597889).

242241551 is a wasteful number, since it uses less digits than its factorization.

242241551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241593.

The product of its digits is 3200, while the sum is 26.

The square root of 242241551 is about 15564.1109929221. The cubic root of 242241551 is about 623.3752367444.

Adding to 242241551 its reverse (155142242), we get a palindrome (397383793).

The spelling of 242241551 in words is "two hundred forty-two million, two hundred forty-one thousand, five hundred fifty-one".