145740015 has 12 divisors (see below), whose sum is σ = 252616104. Its totient is φ = 77727984.

The previous prime is 145739987. The next prime is 145740019. The reversal of 145740015 is 510047541.

It is a happy number.

It is not a de Polignac number, because 145740015 - 2¹⁰ = 145738991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145740019) 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 11 ways as a sum of consecutive naturals, for example, 1619289 + ... + 1619378.

It is an arithmetic number, because the mean of its divisors is an integer number (21051342).

Almost surely, 2^145740015 is an apocalyptic number.

145740015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145740015 is a deficient number, since it is larger than the sum of its proper divisors (106876089).

145740015 is a wasteful number, since it uses less digits than its factorization.

145740015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238678 (or 3238675 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 145740015 is about 12072.2829241200. The cubic root of 145740015 is about 526.2510030580.

Adding to 145740015 its reverse (510047541), we get a palindrome (655787556).

The spelling of 145740015 in words is "one hundred forty-five million, seven hundred forty thousand, fifteen".