1205612842 has 8 divisors (see below), whose sum is σ = 2066764896. Its totient is φ = 516691212.

The previous prime is 1205612809. The next prime is 1205612843. The reversal of 1205612842 is 2482165021.

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

It is not an unprimeable number, because it can be changed into a prime (1205612843) 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, 43057588 + ... + 43057615.

It is an arithmetic number, because the mean of its divisors is an integer number (258345612).

Almost surely, 2^1205612842 is an apocalyptic number.

1205612842 is a deficient number, since it is larger than the sum of its proper divisors (861152054).

1205612842 is an equidigital number, since it uses as much as digits as its factorization.

1205612842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86115212.

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

The square root of 1205612842 is about 34721.9360347317. The cubic root of 1205612842 is about 1064.3128078762.

Adding to 1205612842 its reverse (2482165021), we get a palindrome (3687777863).

The spelling of 1205612842 in words is "one billion, two hundred five million, six hundred twelve thousand, eight hundred forty-two".