145212 has 12 divisors (see below), whose sum is σ = 338856. Its totient is φ = 48400.

The previous prime is 145207. The next prime is 145213. The reversal of 145212 is 212541.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 145191 and 145200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145213) by changing a digit.

145212 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6039 + ... + 6062.

It is an arithmetic number, because the mean of its divisors is an integer number (28238).

2¹⁴⁵²¹² is an apocalyptic number.

145212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145212 is an abundant number, since it is smaller than the sum of its proper divisors (193644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145212 is a wasteful number, since it uses less digits than its factorization.

145212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12108 (or 12106 counting only the distinct ones).

The product of its digits is 80, while the sum is 15.

The square root of 145212 is about 381.0669232563. The cubic root of 145212 is about 52.5614699496.

Adding to 145212 its reverse (212541), we get a palindrome (357753).

It can be divided in two parts, 1452 and 12, that multiplied together give a square (17424 = 132²).

The spelling of 145212 in words is "one hundred forty-five thousand, two hundred twelve".