145442211 has 32 divisors (see below), whose sum is σ = 205970688. Its totient is φ = 91176960.

The previous prime is 145442203. The next prime is 145442237. The reversal of 145442211 is 112244541.

It is not a de Polignac number, because 145442211 - 2³ = 145442203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145442261) 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 31 ways as a sum of consecutive naturals, for example, 565795 + ... + 566051.

It is an arithmetic number, because the mean of its divisors is an integer number (6436584).

Almost surely, 2^145442211 is an apocalyptic number.

145442211 is a deficient number, since it is larger than the sum of its proper divisors (60528477).

145442211 is a wasteful number, since it uses less digits than its factorization.

145442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 1280, while the sum is 24.

The square root of 145442211 is about 12059.9424127978. The cubic root of 145442211 is about 525.8923129123.

Adding to 145442211 its reverse (112244541), we get a palindrome (257686752).

The spelling of 145442211 in words is "one hundred forty-five million, four hundred forty-two thousand, two hundred eleven".