145073146 has 4 divisors (see below), whose sum is σ = 217609722. Its totient is φ = 72536572.

The previous prime is 145073143. The next prime is 145073147. The reversal of 145073146 is 641370541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136305625 + 8767521 = 11675^2 + 2961^2 .

It is not an unprimeable number, because it can be changed into a prime (145073141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36268285 + ... + 36268288.

Almost surely, 2^145073146 is an apocalyptic number.

145073146 is a deficient number, since it is larger than the sum of its proper divisors (72536576).

145073146 is an equidigital number, since it uses as much as digits as its factorization.

145073146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72536575.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 145073146 is about 12044.6314181879. The cubic root of 145073146 is about 525.4471123848.

The spelling of 145073146 in words is "one hundred forty-five million, seventy-three thousand, one hundred forty-six".