242155943 has 2 divisors, whose sum is σ = 242155944. Its totient is φ = 242155942.

The previous prime is 242155913. The next prime is 242155951. The reversal of 242155943 is 349551242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242155943 - 2⁸ = 242155687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242155913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121077971 + 121077972.

It is an arithmetic number, because the mean of its divisors is an integer number (121077972).

Almost surely, 2^242155943 is an apocalyptic number.

242155943 is a deficient number, since it is larger than the sum of its proper divisors (1).

242155943 is an equidigital number, since it uses as much as digits as its factorization.

242155943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 242155943 is about 15561.3605767619. The cubic root of 242155943 is about 623.3017946301.

The spelling of 242155943 in words is "two hundred forty-two million, one hundred fifty-five thousand, nine hundred forty-three".