1195990442 has 16 divisors (see below), whose sum is σ = 1852671912. Its totient is φ = 578612160.

The previous prime is 1195990441. The next prime is 1195990457. The reversal of 1195990442 is 2440995911.

It can be written as a sum of positive squares in 4 ways, for example, as 619462321 + 576528121 = 24889^2 + 24011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1195990393 and 1195990402.

It is not an unprimeable number, because it can be changed into a prime (1195990441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31253 + ... + 58040.

Almost surely, 2^1195990442 is an apocalyptic number.

1195990442 is a deficient number, since it is larger than the sum of its proper divisors (656681470).

1195990442 is a wasteful number, since it uses less digits than its factorization.

1195990442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89513.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1195990442 is about 34583.0947429521. The cubic root of 1195990442 is about 1061.4736954268.

The spelling of 1195990442 in words is "one billion, one hundred ninety-five million, nine hundred ninety thousand, four hundred forty-two".