249950143 has 2 divisors, whose sum is σ = 249950144. Its totient is φ = 249950142.

The previous prime is 249950081. The next prime is 249950161. The reversal of 249950143 is 341059942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249950143 - 2⁹ = 249949631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249950543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124975071 + 124975072.

It is an arithmetic number, because the mean of its divisors is an integer number (124975072).

Almost surely, 2^249950143 is an apocalyptic number.

249950143 is a deficient number, since it is larger than the sum of its proper divisors (1).

249950143 is an equidigital number, since it uses as much as digits as its factorization.

249950143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 249950143 is about 15809.8116054556. The cubic root of 249950143 is about 629.9186449074.

The spelling of 249950143 in words is "two hundred forty-nine million, nine hundred fifty thousand, one hundred forty-three".