143057461 has 2 divisors, whose sum is σ = 143057462. Its totient is φ = 143057460.

The previous prime is 143057459. The next prime is 143057471. The reversal of 143057461 is 164750341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 6027025 = 11706^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 143057461 - 2¹ = 143057459 is a prime.

Together with 143057459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143057471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71528730 + 71528731.

It is an arithmetic number, because the mean of its divisors is an integer number (71528731).

Almost surely, 2^143057461 is an apocalyptic number.

It is an amenable number.

143057461 is a deficient number, since it is larger than the sum of its proper divisors (1).

143057461 is an equidigital number, since it uses as much as digits as its factorization.

143057461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 143057461 is about 11960.6630669039. The cubic root of 143057461 is about 523.0021862307.

The spelling of 143057461 in words is "one hundred forty-three million, fifty-seven thousand, four hundred sixty-one".