145212246 has 48 divisors (see below), whose sum is σ = 326671488. Its totient is φ = 46569600.

The previous prime is 145212233. The next prime is 145212259. The reversal of 145212246 is 642212541.

145212246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145212233) and next prime (145212259).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109266 + ... + 110586.

It is an arithmetic number, because the mean of its divisors is an integer number (6805656).

Almost surely, 2^145212246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145212246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163335744).

145212246 is an abundant number, since it is smaller than the sum of its proper divisors (181459242).

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

145212246 is a wasteful number, since it uses less digits than its factorization.

145212246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557 (or 1554 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 145212246 is about 12050.4043915547. The cubic root of 145212246 is about 525.6149963056.

Adding to 145212246 its reverse (642212541), we get a palindrome (787424787).

The spelling of 145212246 in words is "one hundred forty-five million, two hundred twelve thousand, two hundred forty-six".