1162143254 has 4 divisors (see below), whose sum is σ = 1743214884. Its totient is φ = 581071626.

The previous prime is 1162143247. The next prime is 1162143259. The reversal of 1162143254 is 4523412611.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162143259) 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, 290535812 + ... + 290535815.

It is an arithmetic number, because the mean of its divisors is an integer number (435803721).

Almost surely, 2^1162143254 is an apocalyptic number.

1162143254 is a deficient number, since it is larger than the sum of its proper divisors (581071630).

1162143254 is an equidigital number, since it uses as much as digits as its factorization.

1162143254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581071629.

The product of its digits is 5760, while the sum is 29.

The square root of 1162143254 is about 34090.2222638692. Note that the first 4 decimals coincide. The cubic root of 1162143254 is about 1051.3642897681.

Adding to 1162143254 its reverse (4523412611), we get a palindrome (5685555865).

The spelling of 1162143254 in words is "one billion, one hundred sixty-two million, one hundred forty-three thousand, two hundred fifty-four".