1219675842 has 96 divisors (see below), whose sum is σ = 3401109504. Its totient is φ = 306568800.

The previous prime is 1219675837. The next prime is 1219675861. The reversal of 1219675842 is 2485769121.

1219675842 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 67 + 584 + 2 = 666.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 28773 + ... + 57159.

It is an arithmetic number, because the mean of its divisors is an integer number (35428224).

Almost surely, 2^1219675842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1219675842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700554752).

1219675842 is an abundant number, since it is smaller than the sum of its proper divisors (2181433662).

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

1219675842 is a wasteful number, since it uses less digits than its factorization.

1219675842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28444 (or 28441 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1219675842 is about 34923.8577765974. The cubic root of 1219675842 is about 1068.4350844816.

The spelling of 1219675842 in words is "one billion, two hundred nineteen million, six hundred seventy-five thousand, eight hundred forty-two".