242001511 has 4 divisors (see below), whose sum is σ = 256236912. Its totient is φ = 227766112.

The previous prime is 242001493. The next prime is 242001533. The reversal of 242001511 is 115100242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242001511 - 2²³ = 233612903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242001581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7117675 + ... + 7117708.

It is an arithmetic number, because the mean of its divisors is an integer number (64059228).

Almost surely, 2^242001511 is an apocalyptic number.

242001511 is a deficient number, since it is larger than the sum of its proper divisors (14235401).

242001511 is a wasteful number, since it uses less digits than its factorization.

242001511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14235400.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 242001511 is about 15556.3977514076. The cubic root of 242001511 is about 623.1692654133.

Adding to 242001511 its reverse (115100242), we get a palindrome (357101753).

The spelling of 242001511 in words is "two hundred forty-two million, one thousand, five hundred eleven".