145121188 has 12 divisors (see below), whose sum is σ = 254142000. Its totient is φ = 72509192.

The previous prime is 145121177. The next prime is 145121189. The reversal of 145121188 is 881121541.

145121188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145121189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6106 + ... + 18097.

It is an arithmetic number, because the mean of its divisors is an integer number (21178500).

Almost surely, 2^145121188 is an apocalyptic number.

It is an amenable number.

145121188 is a deficient number, since it is larger than the sum of its proper divisors (109020812).

145121188 is a wasteful number, since it uses less digits than its factorization.

145121188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25706 (or 25704 counting only the distinct ones).

The product of its digits is 2560, while the sum is 31.

The square root of 145121188 is about 12046.6255856153. The cubic root of 145121188 is about 525.5051078279.

The spelling of 145121188 in words is "one hundred forty-five million, one hundred twenty-one thousand, one hundred eighty-eight".