242667731 has 2 divisors, whose sum is σ = 242667732. Its totient is φ = 242667730.

The previous prime is 242667701. The next prime is 242667743. The reversal of 242667731 is 137766242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242667731 - 2¹⁰ = 242666707 is a prime.

It is a super-2 number, since 2×242667731² = 117775255337376722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (242667701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121333865 + 121333866.

It is an arithmetic number, because the mean of its divisors is an integer number (121333866).

Almost surely, 2^242667731 is an apocalyptic number.

242667731 is a deficient number, since it is larger than the sum of its proper divisors (1).

242667731 is an equidigital number, since it uses as much as digits as its factorization.

242667731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 242667731 is about 15577.7960893061. The cubic root of 242667731 is about 623.7405943939.

The spelling of 242667731 in words is "two hundred forty-two million, six hundred sixty-seven thousand, seven hundred thirty-one".