1289983142 has 8 divisors (see below), whose sum is σ = 2211399696. Its totient is φ = 552849912.

The previous prime is 1289983127. The next prime is 1289983147. The reversal of 1289983142 is 2413899821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289983147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46070813 + ... + 46070840.

It is an arithmetic number, because the mean of its divisors is an integer number (276424962).

Almost surely, 2^1289983142 is an apocalyptic number.

1289983142 is a deficient number, since it is larger than the sum of its proper divisors (921416554).

1289983142 is an equidigital number, since it uses as much as digits as its factorization.

1289983142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92141662.

The product of its digits is 248832, while the sum is 47.

The square root of 1289983142 is about 35916.3353086030. The cubic root of 1289983142 is about 1088.5824914675.

The spelling of 1289983142 in words is "one billion, two hundred eighty-nine million, nine hundred eighty-three thousand, one hundred forty-two".