19242149042 has 4 divisors (see below), whose sum is σ = 28863223566. Its totient is φ = 9621074520.

The previous prime is 19242149039. The next prime is 19242149081. The reversal of 19242149042 is 24094124291.

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., 10241642401 + 9000506641 = 101201^2 + 94871^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19242148987 and 19242149005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4810537259 + ... + 4810537262.

Almost surely, 2^19242149042 is an apocalyptic number.

19242149042 is a deficient number, since it is larger than the sum of its proper divisors (9621074524).

19242149042 is an equidigital number, since it uses as much as digits as its factorization.

19242149042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9621074523.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 19242149042 in words is "nineteen billion, two hundred forty-two million, one hundred forty-nine thousand, forty-two".