145202542420 has 24 divisors (see below), whose sum is σ = 328381134984. Its totient is φ = 53613246336.

The previous prime is 145202542417. The next prime is 145202542421. The reversal of 145202542420 is 24245202541.

It can be written as a sum of positive squares in 4 ways, for example, as 6546104464 + 138656437956 = 80908^2 + 372366^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145202542421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279235399 + ... + 279235918.

It is an arithmetic number, because the mean of its divisors is an integer number (13682547291).

Almost surely, 2^145202542420 is an apocalyptic number.

145202542420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145202542420 is an abundant number, since it is smaller than the sum of its proper divisors (183178592564).

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

145202542420 is a wasteful number, since it uses less digits than its factorization.

145202542420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558471339 (or 558471337 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 145202542420 its reverse (24245202541), we get a palindrome (169447744961).

The spelling of 145202542420 in words is "one hundred forty-five billion, two hundred two million, five hundred forty-two thousand, four hundred twenty".