242534139 has 8 divisors (see below), whose sum is σ = 323452752. Its totient is φ = 161652480.

The previous prime is 242534119. The next prime is 242534143. The reversal of 242534139 is 931435242.

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

It is not a de Polignac number, because 242534139 - 2¹¹ = 242532091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242534119) 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, 15687 + ... + 27039.

It is an arithmetic number, because the mean of its divisors is an integer number (40431594).

Almost surely, 2^242534139 is an apocalyptic number.

242534139 is a deficient number, since it is larger than the sum of its proper divisors (80918613).

242534139 is a wasteful number, since it uses less digits than its factorization.

242534139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18477.

The product of its digits is 25920, while the sum is 33.

The square root of 242534139 is about 15573.5076010512. The cubic root of 242534139 is about 623.6261140595.

The spelling of 242534139 in words is "two hundred forty-two million, five hundred thirty-four thousand, one hundred thirty-nine".