145121178 has 32 divisors (see below), whose sum is σ = 298825920. Its totient is φ = 46949760.

The previous prime is 145121177. The next prime is 145121189. The reversal of 145121178 is 871121541.

It is not an unprimeable number, because it can be changed into a prime (145121177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168513 + ... + 169371.

It is an arithmetic number, because the mean of its divisors is an integer number (9338310).

Almost surely, 2^145121178 is an apocalyptic number.

145121178 is an abundant number, since it is smaller than the sum of its proper divisors (153704742).

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

145121178 is a wasteful number, since it uses less digits than its factorization.

145121178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662.

The product of its digits is 2240, while the sum is 30.

The square root of 145121178 is about 12046.6251705613. The cubic root of 145121178 is about 525.5050957574.

The spelling of 145121178 in words is "one hundred forty-five million, one hundred twenty-one thousand, one hundred seventy-eight".