145500420 has 96 divisors (see below), whose sum is σ = 441762048. Its totient is φ = 35569152.

The previous prime is 145500413. The next prime is 145500449. The reversal of 145500420 is 24005541.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129702 + ... + 130818.

It is an arithmetic number, because the mean of its divisors is an integer number (4601688).

Almost surely, 2^145500420 is an apocalyptic number.

145500420 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 145500420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220881024).

145500420 is an abundant number, since it is smaller than the sum of its proper divisors (296261628).

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

145500420 is a wasteful number, since it uses less digits than its factorization.

145500420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 145500420 is about 12062.3554913624. The cubic root of 145500420 is about 525.9624612379.

Adding to 145500420 its reverse (24005541), we get a palindrome (169505961).

The spelling of 145500420 in words is "one hundred forty-five million, five hundred thousand, four hundred twenty".