19742193 has 24 divisors (see below), whose sum is σ = 29244800. Its totient is φ = 12830400.

The previous prime is 19742183. The next prime is 19742207. The reversal of 19742193 is 39124791.

It is not a de Polignac number, because 19742193 - 2¹⁴ = 19725809 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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99108 + ... + 99306.

Almost surely, 2^19742193 is an apocalyptic number.

It is an amenable number.

19742193 is a deficient number, since it is larger than the sum of its proper divisors (9502607).

19742193 is a wasteful number, since it uses less digits than its factorization.

19742193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 19742193 is about 4443.2187657148. The cubic root of 19742193 is about 270.2703875701.

The spelling of 19742193 in words is "nineteen million, seven hundred forty-two thousand, one hundred ninety-three".