143040420 has 36 divisors (see below), whose sum is σ = 433889820. Its totient is φ = 38144064.

The previous prime is 143040413. The next prime is 143040421. The reversal of 143040420 is 24040341.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 94012416 = 7002^2 + 9696^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 143040393 and 143040402.

It is not an unprimeable number, because it can be changed into a prime (143040421) 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 11 ways as a sum of consecutive naturals, for example, 397155 + ... + 397514.

It is an arithmetic number, because the mean of its divisors is an integer number (12052495).

Almost surely, 2^143040420 is an apocalyptic number.

143040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143040420 is an abundant number, since it is smaller than the sum of its proper divisors (290849400).

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

143040420 is a wasteful number, since it uses less digits than its factorization.

143040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794684 (or 794679 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 143040420 is about 11959.9506687946. The cubic root of 143040420 is about 522.9814187384.

Adding to 143040420 its reverse (24040341), we get a palindrome (167080761).

The spelling of 143040420 in words is "one hundred forty-three million, forty thousand, four hundred twenty".