145205040 has 40 divisors (see below), whose sum is σ = 450136368. Its totient is φ = 38721280.

The previous prime is 145205033. The next prime is 145205063. The reversal of 145205040 is 40502541.

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

It is a junction number, because it is equal to n+sod(n) for n = 145204998 and 145205016.

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, 302271 + ... + 302750.

Almost surely, 2^145205040 is an apocalyptic number.

145205040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145205040 is an abundant number, since it is smaller than the sum of its proper divisors (304931328).

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

145205040 is a wasteful number, since it uses less digits than its factorization.

145205040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605037 (or 605031 counting only the distinct ones).

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

The square root of 145205040 is about 12050.1053937300. The cubic root of 145205040 is about 525.6063018040.

Adding to 145205040 its reverse (40502541), we get a palindrome (185707581).

The spelling of 145205040 in words is "one hundred forty-five million, two hundred five thousand, forty".