145303304420 has 24 divisors (see below), whose sum is σ = 305269877304. Its totient is φ = 58096000256.

The previous prime is 145303304407. The next prime is 145303304429. The reversal of 145303304420 is 24403303541.

It can be written as a sum of positive squares in 4 ways, for example, as 4328587264 + 140974717156 = 65792^2 + 375466^2 .

It is a super-2 number, since 2×145303304420² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145303304429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1535507 + ... + 1627386.

It is an arithmetic number, because the mean of its divisors is an integer number (12719578221).

Almost surely, 2^145303304420 is an apocalyptic number.

145303304420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145303304420 is an abundant number, since it is smaller than the sum of its proper divisors (159966572884).

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

145303304420 is a wasteful number, since it uses less digits than its factorization.

145303304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165199 (or 3165197 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 145303304420 its reverse (24403303541), we get a palindrome (169706607961).

The spelling of 145303304420 in words is "one hundred forty-five billion, three hundred three million, three hundred four thousand, four hundred twenty".