143157409 has 2 divisors, whose sum is σ = 143157410. Its totient is φ = 143157408.

The previous prime is 143157407. The next prime is 143157437. The reversal of 143157409 is 904751341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86862400 + 56295009 = 9320^2 + 7503^2 .

It is a cyclic number.

It is not a de Polignac number, because 143157409 - 2¹ = 143157407 is a prime.

Together with 143157407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (143157407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71578704 + 71578705.

It is an arithmetic number, because the mean of its divisors is an integer number (71578705).

Almost surely, 2^143157409 is an apocalyptic number.

It is an amenable number.

143157409 is a deficient number, since it is larger than the sum of its proper divisors (1).

143157409 is an equidigital number, since it uses as much as digits as its factorization.

143157409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 143157409 is about 11964.8405338308. The cubic root of 143157409 is about 523.1239574715.

The spelling of 143157409 in words is "one hundred forty-three million, one hundred fifty-seven thousand, four hundred nine".