145240252 has 6 divisors (see below), whose sum is σ = 254170448. Its totient is φ = 72620124.

The previous prime is 145240243. The next prime is 145240267. The reversal of 145240252 is 252042541.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18155028 + ... + 18155035.

Almost surely, 2^145240252 is an apocalyptic number.

It is an amenable number.

145240252 is a deficient number, since it is larger than the sum of its proper divisors (108930196).

145240252 is a wasteful number, since it uses less digits than its factorization.

145240252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36310067 (or 36310065 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 145240252 is about 12051.5663712233. The cubic root of 145240252 is about 525.6487846115.

Adding to 145240252 its reverse (252042541), we get a palindrome (397282793).

The spelling of 145240252 in words is "one hundred forty-five million, two hundred forty thousand, two hundred fifty-two".