145321341434420 has 24 divisors (see below), whose sum is σ = 307002211133184. Its totient is φ = 57780461503136.

The previous prime is 145321341434369. The next prime is 145321341434443. The reversal of 145321341434420 is 24434143123541.

145321341434420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145321341434420² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21754688492 + ... + 21754695171.

It is an arithmetic number, because the mean of its divisors is an integer number (12791758797216).

Almost surely, 2^{145321341434420} is an apocalyptic number.

145321341434420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145321341434420 is an abundant number, since it is smaller than the sum of its proper divisors (161680869698764).

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

145321341434420 is a wasteful number, since it uses less digits than its factorization.

145321341434420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43509383839 (or 43509383837 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 145321341434420 its reverse (24434143123541), we get a palindrome (169755484557961).

The spelling of 145321341434420 in words is "one hundred forty-five trillion, three hundred twenty-one billion, three hundred forty-one million, four hundred thirty-four thousand, four hundred twenty".