145740027 has 4 divisors (see below), whose sum is σ = 194320040. Its totient is φ = 97160016.

The previous prime is 145740019. The next prime is 145740037. The reversal of 145740027 is 720047541.

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

It is not a de Polignac number, because 145740027 - 2³ = 145740019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145739976 and 145740003.

It is not an unprimeable number, because it can be changed into a prime (145740037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24290002 + ... + 24290007.

It is an arithmetic number, because the mean of its divisors is an integer number (48580010).

Almost surely, 2^145740027 is an apocalyptic number.

145740027 is a deficient number, since it is larger than the sum of its proper divisors (48580013).

145740027 is an equidigital number, since it uses as much as digits as its factorization.

145740027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48580012.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 145740027 is about 12072.2834211263. The cubic root of 145740027 is about 526.2510175015.

Adding to 145740027 its reverse (720047541), we get a palindrome (865787568).

The spelling of 145740027 in words is "one hundred forty-five million, seven hundred forty thousand, twenty-seven".