1243158 has 16 divisors (see below), whose sum is σ = 2841600. Its totient is φ = 355176.

The previous prime is 1243157. The next prime is 1243169. The reversal of 1243158 is 8513421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14758 + ... + 14841.

It is an arithmetic number, because the mean of its divisors is an integer number (177600).

2^1243158 is an apocalyptic number.

1243158 is an abundant number, since it is smaller than the sum of its proper divisors (1598442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243158 is a wasteful number, since it uses less digits than its factorization.

1243158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29611.

The product of its digits is 960, while the sum is 24.

The square root of 1243158 is about 1114.9699547521. The cubic root of 1243158 is about 107.5248329146.

Adding to 1243158 its reverse (8513421), we get a palindrome (9756579).

The spelling of 1243158 in words is "one million, two hundred forty-three thousand, one hundred fifty-eight".