145421600 has 36 divisors (see below), whose sum is σ = 355012434. Its totient is φ = 58168320.

The previous prime is 145421599. The next prime is 145421603. The reversal of 145421600 is 6124541.

It can be written as a sum of positive squares in 3 ways, for example, as 94556176 + 50865424 = 9724^2 + 7132^2 .

It is a super-2 number, since 2×145421600² = 42294883493120000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145421603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90089 + ... + 91688.

Almost surely, 2^145421600 is an apocalyptic number.

145421600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145421600 is an abundant number, since it is smaller than the sum of its proper divisors (209590834).

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

145421600 is a wasteful number, since it uses less digits than its factorization.

145421600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181797 (or 181784 counting only the distinct ones).

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

The square root of 145421600 is about 12059.0878593698. The cubic root of 145421600 is about 525.8674698757.

The spelling of 145421600 in words is "one hundred forty-five million, four hundred twenty-one thousand, six hundred".