242445400 has 24 divisors (see below), whose sum is σ = 563686020. Its totient is φ = 96978080.

The previous prime is 242445397. The next prime is 242445403. The reversal of 242445400 is 4544242.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (242445397) and next prime (242445403).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242445403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605914 + ... + 606313.

Almost surely, 2^242445400 is an apocalyptic number.

242445400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242445400 is an abundant number, since it is smaller than the sum of its proper divisors (321240620).

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

242445400 is a wasteful number, since it uses less digits than its factorization.

242445400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212243 (or 1212234 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 242445400 is about 15570.6583033602. The cubic root of 242445400 is about 623.5500468185.

Adding to 242445400 its reverse (4544242), we get a palindrome (246989642).

The spelling of 242445400 in words is "two hundred forty-two million, four hundred forty-five thousand, four hundred".