145240205 has 16 divisors (see below), whose sum is σ = 190382400. Its totient is φ = 105490560.

The previous prime is 145240201. The next prime is 145240217. The reversal of 145240205 is 502042541.

It is a happy number.

It is not a de Polignac number, because 145240205 - 2² = 145240201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60926 + ... + 63264.

It is an arithmetic number, because the mean of its divisors is an integer number (11898900).

Almost surely, 2^145240205 is an apocalyptic number.

It is an amenable number.

145240205 is a deficient number, since it is larger than the sum of its proper divisors (45142195).

145240205 is a wasteful number, since it uses less digits than its factorization.

145240205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 145240205 is about 12051.5644212691. The cubic root of 145240205 is about 525.6487279112.

Adding to 145240205 its reverse (502042541), we get a palindrome (647282746).

The spelling of 145240205 in words is "one hundred forty-five million, two hundred forty thousand, two hundred five".