145200138 has 16 divisors (see below), whose sum is σ = 292618656. Its totient is φ = 48030320.

The previous prime is 145200113. The next prime is 145200149. The reversal of 145200138 is 831002541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91581 + ... + 93152.

It is an arithmetic number, because the mean of its divisors is an integer number (18288666).

Almost surely, 2^145200138 is an apocalyptic number.

145200138 is an abundant number, since it is smaller than the sum of its proper divisors (147418518).

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

145200138 is a wasteful number, since it uses less digits than its factorization.

145200138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184869.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 145200138 is about 12049.9019913027. The cubic root of 145200138 is about 525.6003870619.

Adding to 145200138 its reverse (831002541), we get a palindrome (976202679).

The spelling of 145200138 in words is "one hundred forty-five million, two hundred thousand, one hundred thirty-eight".