19742113 has 4 divisors (see below), whose sum is σ = 19933888. Its totient is φ = 19550340.

The previous prime is 19742077. The next prime is 19742123. The reversal of 19742113 is 31124791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19742113 - 2²¹ = 17644961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19742123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95733 + ... + 95938.

It is an arithmetic number, because the mean of its divisors is an integer number (4983472).

Almost surely, 2^19742113 is an apocalyptic number.

It is an amenable number.

19742113 is a deficient number, since it is larger than the sum of its proper divisors (191775).

19742113 is a wasteful number, since it uses less digits than its factorization.

19742113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191774.

The product of its digits is 1512, while the sum is 28.

The square root of 19742113 is about 4443.2097632230. The cubic root of 19742113 is about 270.2700225033.

The spelling of 19742113 in words is "nineteen million, seven hundred forty-two thousand, one hundred thirteen".