145212452 has 96 divisors (see below), whose sum is σ = 329978880. Its totient is φ = 54288000.

The previous prime is 145212451. The next prime is 145212461. The reversal of 145212452 is 254212541.

It is not an unprimeable number, because it can be changed into a prime (145212451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108427 + ... + 1108557.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^145212452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145212452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164989440).

145212452 is an abundant number, since it is smaller than the sum of its proper divisors (184766428).

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

145212452 is a wasteful number, since it uses less digits than its factorization.

145212452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 271 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 145212452 is about 12050.4129389826. The cubic root of 145212452 is about 525.6152448536.

Adding to 145212452 its reverse (254212541), we get a palindrome (399424993).

The spelling of 145212452 in words is "one hundred forty-five million, two hundred twelve thousand, four hundred fifty-two".