242421725 has 96 divisors (see below), whose sum is σ = 398974464. Its totient is φ = 141926400.

The previous prime is 242421719. The next prime is 242421731. The reversal of 242421725 is 527124242.

It is an interprime number because it is at equal distance from previous prime (242421719) and next prime (242421731).

It is a de Polignac number, because none of the positive numbers 2^k-242421725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2145269 + ... + 2145381.

It is an arithmetic number, because the mean of its divisors is an integer number (4155984).

Almost surely, 2^242421725 is an apocalyptic number.

242421725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

242421725 is a deficient number, since it is larger than the sum of its proper divisors (156552739).

242421725 is a wasteful number, since it uses less digits than its factorization.

242421725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 202 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 242421725 is about 15569.8980407709. The cubic root of 242421725 is about 623.5297494266.

Adding to 242421725 its reverse (527124242), we get a palindrome (769545967).

It can be divided in two parts, 2424217 and 25, that added together give a palindrome (2424242).

The spelling of 242421725 in words is "two hundred forty-two million, four hundred twenty-one thousand, seven hundred twenty-five".