242126387 has 4 divisors (see below), whose sum is σ = 244347840. Its totient is φ = 239904936.

The previous prime is 242126321. The next prime is 242126429. The reversal of 242126387 is 783621242.

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 242126387 - 2¹⁰ = 242125363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242120387) 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, 1110563 + ... + 1110780.

It is an arithmetic number, because the mean of its divisors is an integer number (61086960).

Almost surely, 2^242126387 is an apocalyptic number.

242126387 is a deficient number, since it is larger than the sum of its proper divisors (2221453).

242126387 is a wasteful number, since it uses less digits than its factorization.

242126387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221452.

The product of its digits is 32256, while the sum is 35.

The square root of 242126387 is about 15560.4108878911. The cubic root of 242126387 is about 623.2764348597.

The spelling of 242126387 in words is "two hundred forty-two million, one hundred twenty-six thousand, three hundred eighty-seven".