242023551 has 16 divisors (see below), whose sum is σ = 402325248. Its totient is φ = 125726400.

The previous prime is 242023499. The next prime is 242023553. The reversal of 242023551 is 155320242.

It is not a de Polignac number, because 242023551 - 2⁹ = 242023039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242023553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523630 + ... + 524091.

It is an arithmetic number, because the mean of its divisors is an integer number (25145328).

Almost surely, 2^242023551 is an apocalyptic number.

242023551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

242023551 is a deficient number, since it is larger than the sum of its proper divisors (160301697).

242023551 is a wasteful number, since it uses less digits than its factorization.

242023551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047742.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 242023551 is about 15557.1061254978. The cubic root of 242023551 is about 623.1881829725.

Adding to 242023551 its reverse (155320242), we get a palindrome (397343793).

The spelling of 242023551 in words is "two hundred forty-two million, twenty-three thousand, five hundred fifty-one".