19315042 has 4 divisors (see below), whose sum is σ = 28972566. Its totient is φ = 9657520.

The previous prime is 19315031. The next prime is 19315057. The reversal of 19315042 is 24051391.

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., 11758041 + 7557001 = 3429^2 + 2749^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19314998 and 19315016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4828759 + ... + 4828762.

Almost surely, 2^19315042 is an apocalyptic number.

19315042 is a deficient number, since it is larger than the sum of its proper divisors (9657524).

19315042 is an equidigital number, since it uses as much as digits as its factorization.

19315042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9657523.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 19315042 is about 4394.8881669503. Note that the first 3 decimals coincide. The cubic root of 19315042 is about 268.3069272611.

The spelling of 19315042 in words is "nineteen million, three hundred fifteen thousand, forty-two".