1243412158 has 16 divisors (see below), whose sum is σ = 1916483184. Its totient is φ = 604601280.

The previous prime is 1243412143. The next prime is 1243412161. The reversal of 1243412158 is 8512143421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242178 + ... + 247258.

It is an arithmetic number, because the mean of its divisors is an integer number (119780199).

Almost surely, 2^1243412158 is an apocalyptic number.

1243412158 is a deficient number, since it is larger than the sum of its proper divisors (673071026).

1243412158 is a wasteful number, since it uses less digits than its factorization.

1243412158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8427.

The product of its digits is 7680, while the sum is 31.

The square root of 1243412158 is about 35262.0498269740. The cubic root of 1243412158 is about 1075.3216006965.

Adding to 1243412158 its reverse (8512143421), we get a palindrome (9755555579).

The spelling of 1243412158 in words is "one billion, two hundred forty-three million, four hundred twelve thousand, one hundred fifty-eight".