145133340 has 96 divisors (see below), whose sum is σ = 448084224. Its totient is φ = 34805760.

The previous prime is 145133309. The next prime is 145133347. The reversal of 145133340 is 43331541.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 145133340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145133347) 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 31 ways as a sum of consecutive naturals, for example, 62887 + ... + 65153.

It is an arithmetic number, because the mean of its divisors is an integer number (4667544).

Almost surely, 2^145133340 is an apocalyptic number.

145133340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145133340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224042112).

145133340 is an abundant number, since it is smaller than the sum of its proper divisors (302950884).

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

145133340 is a wasteful number, since it uses less digits than its factorization.

145133340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 145133340 is about 12047.1299486641. The cubic root of 145133340 is about 525.5197754767.

Adding to 145133340 its reverse (43331541), we get a palindrome (188464881).

The spelling of 145133340 in words is "one hundred forty-five million, one hundred thirty-three thousand, three hundred forty".