145040540 has 12 divisors (see below), whose sum is σ = 304585176. Its totient is φ = 58016208.

The previous prime is 145040531. The next prime is 145040557. The reversal of 145040540 is 45040541.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3625994 + ... + 3626033.

It is an arithmetic number, because the mean of its divisors is an integer number (25382098).

Almost surely, 2^145040540 is an apocalyptic number.

145040540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145040540 is an abundant number, since it is smaller than the sum of its proper divisors (159544636).

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

145040540 is a wasteful number, since it uses less digits than its factorization.

145040540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7252036 (or 7252034 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 145040540 is about 12043.2777930263. The cubic root of 145040540 is about 525.4077437106.

Subtracting from 145040540 its reverse (45040541), we obtain a palindrome (99999999).

The spelling of 145040540 in words is "one hundred forty-five million, forty thousand, five hundred forty".