145021212 has 48 divisors (see below), whose sum is σ = 429694720. Its totient is φ = 41434416.

The previous prime is 145021211. The next prime is 145021231. The reversal of 145021212 is 212120541.

145021212 is a `hidden beast` number, since 1 + 450 + 2 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145021211) 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, 95158 + ... + 96669.

Almost surely, 2^145021212 is an apocalyptic number.

145021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145021212 is an abundant number, since it is smaller than the sum of its proper divisors (284673508).

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

145021212 is a wasteful number, since it uses less digits than its factorization.

145021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191847 (or 191839 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 145021212 is about 12042.4753269417. The cubic root of 145021212 is about 525.3844041854.

Adding to 145021212 its reverse (212120541), we get a palindrome (357141753).

The spelling of 145021212 in words is "one hundred forty-five million, twenty-one thousand, two hundred twelve".