145200242 has 48 divisors (see below), whose sum is σ = 263148480. Its totient is φ = 59764320.

The previous prime is 145200217. The next prime is 145200257. The reversal of 145200242 is 242002541.

It is a happy number.

145200242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145200242² = 42166220553717128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105068 + ... + 106440.

It is an arithmetic number, because the mean of its divisors is an integer number (5482260).

Almost surely, 2^145200242 is an apocalyptic number.

145200242 is a deficient number, since it is larger than the sum of its proper divisors (117948238).

145200242 is a wasteful number, since it uses less digits than its factorization.

145200242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145200242 is about 12049.9063066897. The cubic root of 145200242 is about 525.6005125494.

Adding to 145200242 its reverse (242002541), we get a palindrome (387202783).

The spelling of 145200242 in words is "one hundred forty-five million, two hundred thousand, two hundred forty-two".