19042094242 has 4 divisors (see below), whose sum is σ = 28563141366. Its totient is φ = 9521047120.

The previous prime is 19042094237. The next prime is 19042094261. The reversal of 19042094242 is 24249024091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13764217041 + 5277877201 = 117321^2 + 72649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4760523559 + ... + 4760523562.

Almost surely, 2^19042094242 is an apocalyptic number.

19042094242 is a deficient number, since it is larger than the sum of its proper divisors (9521047124).

19042094242 is an equidigital number, since it uses as much as digits as its factorization.

19042094242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521047123.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 19042094242 in words is "nineteen billion, forty-two million, ninety-four thousand, two hundred forty-two".