242661929 has 2 divisors, whose sum is σ = 242661930. Its totient is φ = 242661928.

The previous prime is 242661919. The next prime is 242661949. The reversal of 242661929 is 929166242.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130873600 + 111788329 = 11440^2 + 10573^2 .

It is a cyclic number.

It is not a de Polignac number, because 242661929 - 2²⁴ = 225884713 is a prime.

It is not a weakly prime, because it can be changed into another prime (242661919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121330964 + 121330965.

It is an arithmetic number, because the mean of its divisors is an integer number (121330965).

Almost surely, 2^242661929 is an apocalyptic number.

It is an amenable number.

242661929 is a deficient number, since it is larger than the sum of its proper divisors (1).

242661929 is an equidigital number, since it uses as much as digits as its factorization.

242661929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 242661929 is about 15577.6098615930. The cubic root of 242661929 is about 623.7356233007.

The spelling of 242661929 in words is "two hundred forty-two million, six hundred sixty-one thousand, nine hundred twenty-nine".