145840245 has 16 divisors (see below), whose sum is σ = 233513280. Its totient is φ = 77725184.

The previous prime is 145840243. The next prime is 145840301. The reversal of 145840245 is 542048541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145840245 - 2¹ = 145840243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145840243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25762 + ... + 30908.

It is an arithmetic number, because the mean of its divisors is an integer number (14594580).

Almost surely, 2^145840245 is an apocalyptic number.

145840245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145840245 is a deficient number, since it is larger than the sum of its proper divisors (87673035).

145840245 is a wasteful number, since it uses less digits than its factorization.

145840245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044.

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 145840245 is about 12076.4334552880. The cubic root of 145840245 is about 526.3716152109.

Adding to 145840245 its reverse (542048541), we get a palindrome (687888786).

The spelling of 145840245 in words is "one hundred forty-five million, eight hundred forty thousand, two hundred forty-five".