242702540 has 24 divisors (see below), whose sum is σ = 539656992. Its totient is φ = 91370240.

The previous prime is 242702531. The next prime is 242702543. The reversal of 242702540 is 45207242.

It is not an unprimeable number, because it can be changed into a prime (242702543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356576 + ... + 357255.

It is an arithmetic number, because the mean of its divisors is an integer number (22485708).

Almost surely, 2^242702540 is an apocalyptic number.

242702540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242702540 is an abundant number, since it is smaller than the sum of its proper divisors (296954452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242702540 is a wasteful number, since it uses less digits than its factorization.

242702540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713857 (or 713855 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 242702540 is about 15578.9133125517. The cubic root of 242702540 is about 623.7704167196.

Adding to 242702540 its reverse (45207242), we get a palindrome (287909782).

The spelling of 242702540 in words is "two hundred forty-two million, seven hundred two thousand, five hundred forty".