145245912 has 96 divisors (see below), whose sum is σ = 430955520. Its totient is φ = 39919680.

The previous prime is 145245911. The next prime is 145245923. The reversal of 145245912 is 219542541.

It is a super-5 number, since 5×145245912⁵ (a number of 42 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145245911) 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 23 ways as a sum of consecutive naturals, for example, 869653 + ... + 869819.

It is an arithmetic number, because the mean of its divisors is an integer number (4489120).

Almost surely, 2^145245912 is an apocalyptic number.

145245912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145245912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215477760).

145245912 is an abundant number, since it is smaller than the sum of its proper divisors (285709608).

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

145245912 is a wasteful number, since it uses less digits than its factorization.

145245912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 210 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 145245912 is about 12051.8011931827. The cubic root of 145245912 is about 525.6556126852.

The spelling of 145245912 in words is "one hundred forty-five million, two hundred forty-five thousand, nine hundred twelve".