145173424 has 40 divisors (see below), whose sum is σ = 320193792. Its totient is φ = 63117120.

The previous prime is 145173397. The next prime is 145173443. The reversal of 145173424 is 424371541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13884 + ... + 21979.

Almost surely, 2^145173424 is an apocalyptic number.

It is an amenable number.

145173424 is an abundant number, since it is smaller than the sum of its proper divisors (175020368).

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

145173424 is a wasteful number, since it uses less digits than its factorization.

145173424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35905 (or 35899 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 145173424 is about 12048.7934665675. The cubic root of 145173424 is about 525.5681516703.

The spelling of 145173424 in words is "one hundred forty-five million, one hundred seventy-three thousand, four hundred twenty-four".