242435251 has 4 divisors (see below), whose sum is σ = 245849904. Its totient is φ = 239020600.

The previous prime is 242435243. The next prime is 242435261. The reversal of 242435251 is 152534242.

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

It is a cyclic number.

It is not a de Polignac number, because 242435251 - 2³ = 242435243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242435261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707220 + ... + 1707361.

It is an arithmetic number, because the mean of its divisors is an integer number (61462476).

Almost surely, 2^242435251 is an apocalyptic number.

242435251 is a deficient number, since it is larger than the sum of its proper divisors (3414653).

242435251 is an equidigital number, since it uses as much as digits as its factorization.

242435251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414652.

The product of its digits is 9600, while the sum is 28.

The square root of 242435251 is about 15570.3323985071. The cubic root of 242435251 is about 623.5413458935.

Adding to 242435251 its reverse (152534242), we get a palindrome (394969493).

It can be divided in two parts, 2424 and 35251, that added together give a triangular number (37675 = T₂₇₄).

The spelling of 242435251 in words is "two hundred forty-two million, four hundred thirty-five thousand, two hundred fifty-one".