145120240 has 20 divisors (see below), whose sum is σ = 337404744. Its totient is φ = 58048064.

The previous prime is 145120219. The next prime is 145120249. The reversal of 145120240 is 42021541.

145120240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145120249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906922 + ... + 907081.

Almost surely, 2^145120240 is an apocalyptic number.

145120240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145120240 is an abundant number, since it is smaller than the sum of its proper divisors (192284504).

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

145120240 is a wasteful number, since it uses less digits than its factorization.

145120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814016 (or 1814010 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 145120240 is about 12046.5862384329. The cubic root of 145120240 is about 525.5039635431.

Adding to 145120240 its reverse (42021541), we get a palindrome (187141781).

The spelling of 145120240 in words is "one hundred forty-five million, one hundred twenty thousand, two hundred forty".