1199878242 has 32 divisors (see below), whose sum is σ = 2431036800. Its totient is φ = 394762368.

The previous prime is 1199878201. The next prime is 1199878249. The reversal of 1199878242 is 2428789911.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1199878249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359859 + ... + 363177.

It is an arithmetic number, because the mean of its divisors is an integer number (75969900).

Almost surely, 2^1199878242 is an apocalyptic number.

1199878242 is an abundant number, since it is smaller than the sum of its proper divisors (1231158558).

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

1199878242 is a wasteful number, since it uses less digits than its factorization.

1199878242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090.

The product of its digits is 580608, while the sum is 51.

The square root of 1199878242 is about 34639.2586814441. The cubic root of 1199878242 is about 1062.6226270831.

The spelling of 1199878242 in words is "one billion, one hundred ninety-nine million, eight hundred seventy-eight thousand, two hundred forty-two".