145120213 has 8 divisors (see below), whose sum is σ = 169236800. Its totient is φ = 124388460.

The previous prime is 145120193. The next prime is 145120219. The reversal of 145120213 is 312021541.

It is not a de Polignac number, because 145120213 - 2²¹ = 143023061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145120219) 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, 211203 + ... + 211888.

It is an arithmetic number, because the mean of its divisors is an integer number (21154600).

Almost surely, 2^145120213 is an apocalyptic number.

It is an amenable number.

145120213 is a deficient number, since it is larger than the sum of its proper divisors (24116587).

145120213 is an frugal number, since it uses more digits than its factorization.

145120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423112 (or 423098 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 145120213 is about 12046.5851177834. The cubic root of 145120213 is about 525.5039309526.

Adding to 145120213 its reverse (312021541), we get a palindrome (457141754).

The spelling of 145120213 in words is "one hundred forty-five million, one hundred twenty thousand, two hundred thirteen".