242137775 has 24 divisors (see below), whose sum is σ = 329443200. Its totient is φ = 175080800.

The previous prime is 242137771. The next prime is 242137801. The reversal of 242137775 is 577731242.

It is not a de Polignac number, because 242137775 - 2² = 242137771 is a prime.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242137771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46766 + ... + 51684.

It is an arithmetic number, because the mean of its divisors is an integer number (13726800).

Almost surely, 2^242137775 is an apocalyptic number.

242137775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

242137775 is a deficient number, since it is larger than the sum of its proper divisors (87305425).

242137775 is a wasteful number, since it uses less digits than its factorization.

242137775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119 (or 5114 counting only the distinct ones).

The product of its digits is 82320, while the sum is 38.

The square root of 242137775 is about 15560.7768122289. The cubic root of 242137775 is about 623.2862062864.

The spelling of 242137775 in words is "two hundred forty-two million, one hundred thirty-seven thousand, seven hundred seventy-five".