1252143 has 18 divisors (see below), whose sum is σ = 1897896. Its totient is φ = 795432.

The previous prime is 1252129. The next prime is 1252151. The reversal of 1252143 is 3412521.

It is not a de Polignac number, because 1252143 - 2⁶ = 1252079 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4630 + ... + 4892.

2^1252143 is an apocalyptic number.

1252143 is a deficient number, since it is larger than the sum of its proper divisors (645753).

1252143 is a wasteful number, since it uses less digits than its factorization.

1252143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 289 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1252143 is about 1118.9919570757. The cubic root of 1252143 is about 107.7832587365.

Adding to 1252143 its sum of digits (18), we get a square (1252161 = 1119²).

Adding to 1252143 its reverse (3412521), we get a palindrome (4664664).

The spelling of 1252143 in words is "one million, two hundred fifty-two thousand, one hundred forty-three".