242551503 has 10 divisors (see below), whose sum is σ = 362330144. Its totient is φ = 161700948.

The previous prime is 242551501. The next prime is 242551523. The reversal of 242551503 is 305155242.

It is a happy number.

It is not a de Polignac number, because 242551503 - 2¹ = 242551501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242551501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1497151 + ... + 1497312.

Almost surely, 2^242551503 is an apocalyptic number.

242551503 is a deficient number, since it is larger than the sum of its proper divisors (119778641).

242551503 is an equidigital number, since it uses as much as digits as its factorization.

242551503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994475 (or 2994466 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 242551503 is about 15574.0650762734. The cubic root of 242551503 is about 623.6409963430.

The spelling of 242551503 in words is "two hundred forty-two million, five hundred fifty-one thousand, five hundred three".