242921427 has 16 divisors (see below), whose sum is σ = 378043392. Its totient is φ = 135858240.

The previous prime is 242921417. The next prime is 242921447. The reversal of 242921427 is 724129242.

It is not a de Polignac number, because 242921427 - 2¹⁹ = 242397139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242921407) 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 15 ways as a sum of consecutive naturals, for example, 122074 + ... + 124047.

It is an arithmetic number, because the mean of its divisors is an integer number (23627712).

Almost surely, 2^242921427 is an apocalyptic number.

242921427 is a deficient number, since it is larger than the sum of its proper divisors (135121965).

242921427 is a wasteful number, since it uses less digits than its factorization.

242921427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246178.

The product of its digits is 16128, while the sum is 33.

The square root of 242921427 is about 15585.9368342105. The cubic root of 242921427 is about 623.9578810534.

The spelling of 242921427 in words is "two hundred forty-two million, nine hundred twenty-one thousand, four hundred twenty-seven".