242421763 has 4 divisors (see below), whose sum is σ = 243436320. Its totient is φ = 241407208.

The previous prime is 242421731. The next prime is 242421769. The reversal of 242421763 is 367124242.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 242421763 - 2⁵ = 242421731 is a prime.

It is a super-2 number, since 2×242421763² = 117536622352056338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242421769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506920 + ... + 507397.

It is an arithmetic number, because the mean of its divisors is an integer number (60859080).

Almost surely, 2^242421763 is an apocalyptic number.

242421763 is a deficient number, since it is larger than the sum of its proper divisors (1014557).

242421763 is a wasteful number, since it uses less digits than its factorization.

242421763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014556.

The product of its digits is 16128, while the sum is 31.

The square root of 242421763 is about 15569.8992610742. The cubic root of 242421763 is about 623.5297820063.

The spelling of 242421763 in words is "two hundred forty-two million, four hundred twenty-one thousand, seven hundred sixty-three".