145237240 has 32 divisors (see below), whose sum is σ = 331667280. Its totient is φ = 57226752.

The previous prime is 145237237. The next prime is 145237241. The reversal of 145237240 is 42732541.

It is a junction number, because it is equal to n+sod(n) for n = 145237199 and 145237208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145237241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24417 + ... + 29776.

Almost surely, 2^145237240 is an apocalyptic number.

145237240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145237240 is an abundant number, since it is smaller than the sum of its proper divisors (186430040).

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

145237240 is a wasteful number, since it uses less digits than its factorization.

145237240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54271 (or 54267 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 145237240 is about 12051.4414075662. The cubic root of 145237240 is about 525.6451509423.

Adding to 145237240 its reverse (42732541), we get a palindrome (187969781).

The spelling of 145237240 in words is "one hundred forty-five million, two hundred thirty-seven thousand, two hundred forty".