145206241 has 8 divisors (see below), whose sum is σ = 149471784. Its totient is φ = 140958720.

The previous prime is 145206239. The next prime is 145206251. The reversal of 145206241 is 142602541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 81270225 + 63936016 = 9015^2 + 7996^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145206241 - 2¹ = 145206239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145206221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12801 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (18683973).

Almost surely, 2^145206241 is an apocalyptic number.

It is an amenable number.

145206241 is a deficient number, since it is larger than the sum of its proper divisors (4265543).

145206241 is an equidigital number, since it uses as much as digits as its factorization.

145206241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 145206241 is about 12050.1552272160. The cubic root of 145206241 is about 525.6077509076.

Adding to 145206241 its reverse (142602541), we get a palindrome (287808782).

The spelling of 145206241 in words is "one hundred forty-five million, two hundred six thousand, two hundred forty-one".