145541740 has 24 divisors (see below), whose sum is σ = 308347200. Its totient is φ = 57700608.

The previous prime is 145541701. The next prime is 145541741. The reversal of 145541740 is 47145541.

It is not an unprimeable number, because it can be changed into a prime (145541741) by changing a digit.

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, 29940 + ... + 34459.

It is an arithmetic number, because the mean of its divisors is an integer number (12847800).

Almost surely, 2^145541740 is an apocalyptic number.

145541740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145541740 is an abundant number, since it is smaller than the sum of its proper divisors (162805460).

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

145541740 is a wasteful number, since it uses less digits than its factorization.

145541740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64521 (or 64519 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 145541740 is about 12064.0681364124. The cubic root of 145541740 is about 526.0122450850.

The spelling of 145541740 in words is "one hundred forty-five million, five hundred forty-one thousand, seven hundred forty".