143904641 has 8 divisors (see below), whose sum is σ = 150404520. Its totient is φ = 137507328.

The previous prime is 143904637. The next prime is 143904659. The reversal of 143904641 is 146409341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 64320400 + 79584241 = 8020^2 + 8921^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143904641 - 2² = 143904637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143904598 and 143904607.

It is not an unprimeable number, because it can be changed into a prime (143904601) 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 7 ways as a sum of consecutive naturals, for example, 22766 + ... + 28391.

It is an arithmetic number, because the mean of its divisors is an integer number (18800565).

Almost surely, 2^143904641 is an apocalyptic number.

It is an amenable number.

143904641 is a deficient number, since it is larger than the sum of its proper divisors (6499879).

143904641 is an equidigital number, since it uses as much as digits as its factorization.

143904641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51283.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 143904641 is about 11996.0260503218. The cubic root of 143904641 is about 524.0325536270.

The spelling of 143904641 in words is "one hundred forty-three million, nine hundred four thousand, six hundred forty-one".