145212146 has 8 divisors (see below), whose sum is σ = 217884144. Its totient is φ = 72584100.

The previous prime is 145212131. The next prime is 145212149. The reversal of 145212146 is 641212541.

145212146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (145212149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (27235518).

Almost surely, 2^145212146 is an apocalyptic number.

145212146 is a deficient number, since it is larger than the sum of its proper divisors (72671998).

145212146 is a wasteful number, since it uses less digits than its factorization.

145212146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21976.

The product of its digits is 1920, while the sum is 26.

The square root of 145212146 is about 12050.4002423156. The cubic root of 145212146 is about 525.6148756511.

Adding to 145212146 its reverse (641212541), we get a palindrome (786424687).

The spelling of 145212146 in words is "one hundred forty-five million, two hundred twelve thousand, one hundred forty-six".