145122503335420 has 144 divisors (see below), whose sum is σ = 348666742091808. Its totient is φ = 50428082442240.

The previous prime is 145122503335399. The next prime is 145122503335499. The reversal of 145122503335420 is 24533305221541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1176705879 + ... + 1176829201.

It is an arithmetic number, because the mean of its divisors is an integer number (2421296820082).

Almost surely, 2^{145122503335420} is an apocalyptic number.

145122503335420 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 145122503335420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174333371045904).

145122503335420 is an abundant number, since it is smaller than the sum of its proper divisors (203544238756388).

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

145122503335420 is a wasteful number, since it uses less digits than its factorization.

145122503335420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139040 (or 139021 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 145122503335420 its reverse (24533305221541), we get a palindrome (169655808556961).

The spelling of 145122503335420 in words is "one hundred forty-five trillion, one hundred twenty-two billion, five hundred three million, three hundred thirty-five thousand, four hundred twenty".