145334420 has 96 divisors (see below), whose sum is σ = 400619520. Its totient is φ = 42906240.

The previous prime is 145334389. The next prime is 145334443. The reversal of 145334420 is 24433541.

It is a super-2 number, since 2×145334420² = 42244187273472800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145334420.

It is a congruent number.

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, 26777 + ... + 31743.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^145334420 is an apocalyptic number.

145334420 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 145334420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200309760).

145334420 is an abundant number, since it is smaller than the sum of its proper divisors (255285100).

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

145334420 is a wasteful number, since it uses less digits than its factorization.

145334420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013 (or 5011 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 145334420 is about 12055.4726162022. The cubic root of 145334420 is about 525.7623633201.

Adding to 145334420 its reverse (24433541), we get a palindrome (169767961).

The spelling of 145334420 in words is "one hundred forty-five million, three hundred thirty-four thousand, four hundred twenty".