19742073 has 24 divisors (see below), whose sum is σ = 29760192. Its totient is φ = 11613888.

The previous prime is 19742059. The next prime is 19742077. The reversal of 19742073 is 37024791.

It is not a de Polignac number, because 19742073 - 2⁴ = 19742057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19742077) 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, 10815 + ... + 12507.

It is an arithmetic number, because the mean of its divisors is an integer number (1240008).

Almost surely, 2^19742073 is an apocalyptic number.

19742073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19742073 is a deficient number, since it is larger than the sum of its proper divisors (10018119).

19742073 is a wasteful number, since it uses less digits than its factorization.

19742073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 19742073 is about 4443.2052619702. The cubic root of 19742073 is about 270.2698399695.

The spelling of 19742073 in words is "nineteen million, seven hundred forty-two thousand, seventy-three".