242753139 has 16 divisors (see below), whose sum is σ = 378563200. Its totient is φ = 153317448.

The previous prime is 242753131. The next prime is 242753191. The reversal of 242753139 is 931357242.

It is not a de Polignac number, because 242753139 - 2³ = 242753131 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (242753131) 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, 236089 + ... + 237114.

It is an arithmetic number, because the mean of its divisors is an integer number (23660200).

Almost surely, 2^242753139 is an apocalyptic number.

242753139 is a deficient number, since it is larger than the sum of its proper divisors (135810061).

242753139 is a wasteful number, since it uses less digits than its factorization.

242753139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473231 (or 473225 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 242753139 is about 15580.5371858611. The cubic root of 242753139 is about 623.8137619138.

The spelling of 242753139 in words is "two hundred forty-two million, seven hundred fifty-three thousand, one hundred thirty-nine".