143215400 has 48 divisors (see below), whose sum is σ = 335170140. Its totient is φ = 56908800.

The previous prime is 143215393. The next prime is 143215403. The reversal of 143215400 is 4512341.

143215400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 27394756 + 115820644 = 5234^2 + 10762^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (143215403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29120 + ... + 33680.

Almost surely, 2^143215400 is an apocalyptic number.

143215400 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 143215400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167585070).

143215400 is an abundant number, since it is smaller than the sum of its proper divisors (191954740).

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

143215400 is a wasteful number, since it uses less digits than its factorization.

143215400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4725 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 143215400 is about 11967.2636805579. The cubic root of 143215400 is about 523.1945845905.

Adding to 143215400 its reverse (4512341), we get a palindrome (147727741).

The spelling of 143215400 in words is "one hundred forty-three million, two hundred fifteen thousand, four hundred".