145745122 has 8 divisors (see below), whose sum is σ = 218869596. Its totient is φ = 72788592.

The previous prime is 145745113. The next prime is 145745137. The reversal of 145745122 is 221547541.

It can be written as a sum of positive squares in 2 ways, for example, as 142062561 + 3682561 = 11919^2 + 1919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39793 + ... + 43300.

Almost surely, 2^145745122 is an apocalyptic number.

145745122 is a deficient number, since it is larger than the sum of its proper divisors (73124474).

145745122 is an equidigital number, since it uses as much as digits as its factorization.

145745122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83972.

The product of its digits is 11200, while the sum is 31.

The square root of 145745122 is about 12072.4944398413. The cubic root of 145745122 is about 526.2571499227.

The spelling of 145745122 in words is "one hundred forty-five million, seven hundred forty-five thousand, one hundred twenty-two".