145122620 has 24 divisors (see below), whose sum is σ = 305064144. Its totient is φ = 57990656.

The previous prime is 145122619. The next prime is 145122643. The reversal of 145122620 is 26221541.

It is a happy number.

145122620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20684 + ... + 26796.

It is an arithmetic number, because the mean of its divisors is an integer number (12711006).

Almost surely, 2^145122620 is an apocalyptic number.

145122620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145122620 is an abundant number, since it is smaller than the sum of its proper divisors (159941524).

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

145122620 is a wasteful number, since it uses less digits than its factorization.

145122620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7309 (or 7307 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 145122620 is about 12046.6850211998. The cubic root of 145122620 is about 525.5068363162.

The spelling of 145122620 in words is "one hundred forty-five million, one hundred twenty-two thousand, six hundred twenty".