143745391 has 2 divisors, whose sum is σ = 143745392. Its totient is φ = 143745390.

The previous prime is 143745337. The next prime is 143745401. The reversal of 143745391 is 193547341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143745391 - 2²¹ = 141648239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143745391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143745311) 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 as a sum of consecutive naturals, namely, 71872695 + 71872696.

It is an arithmetic number, because the mean of its divisors is an integer number (71872696).

Almost surely, 2^143745391 is an apocalyptic number.

143745391 is a deficient number, since it is larger than the sum of its proper divisors (1).

143745391 is an equidigital number, since it uses as much as digits as its factorization.

143745391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 143745391 is about 11989.3865981542. The cubic root of 143745391 is about 523.8391779160.

The spelling of 143745391 in words is "one hundred forty-three million, seven hundred forty-five thousand, three hundred ninety-one".