145021300 has 72 divisors (see below), whose sum is σ = 334423040. Its totient is φ = 54432000.

The previous prime is 145021291. The next prime is 145021301. The reversal of 145021300 is 3120541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145021301) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 241000 + ... + 241600.

Almost surely, 2^145021300 is an apocalyptic number.

145021300 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 145021300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167211520).

145021300 is an abundant number, since it is smaller than the sum of its proper divisors (189401740).

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

145021300 is a wasteful number, since it uses less digits than its factorization.

145021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 145021300 is about 12042.4789806750. The cubic root of 145021300 is about 525.3845104545.

Adding to 145021300 its reverse (3120541), we get a palindrome (148141841).

The spelling of 145021300 in words is "one hundred forty-five million, twenty-one thousand, three hundred".