145500240 has 40 divisors (see below), whose sum is σ = 451051488. Its totient is φ = 38800000.

The previous prime is 145500227. The next prime is 145500247. The reversal of 145500240 is 42005541.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145500247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302886 + ... + 303365.

Almost surely, 2^145500240 is an apocalyptic number.

145500240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145500240 is an abundant number, since it is smaller than the sum of its proper divisors (305551248).

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

145500240 is a wasteful number, since it uses less digits than its factorization.

145500240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606267 (or 606261 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 145500240 is about 12062.3480301308. The cubic root of 145500240 is about 525.9622443467.

Adding to 145500240 its reverse (42005541), we get a palindrome (187505781).

The spelling of 145500240 in words is "one hundred forty-five million, five hundred thousand, two hundred forty".