19742254 has 16 divisors (see below), whose sum is σ = 35625600. Its totient is φ = 8015544.

The previous prime is 19742251. The next prime is 19742293. The reversal of 19742254 is 45224791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19742251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36844 + ... + 37375.

It is an arithmetic number, because the mean of its divisors is an integer number (2226600).

Almost surely, 2^19742254 is an apocalyptic number.

19742254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19742254 is a deficient number, since it is larger than the sum of its proper divisors (15883346).

19742254 is a wasteful number, since it uses less digits than its factorization.

19742254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74247.

The product of its digits is 20160, while the sum is 34.

The square root of 19742254 is about 4443.2256301025. The cubic root of 19742254 is about 270.2706659329.

The spelling of 19742254 in words is "nineteen million, seven hundred forty-two thousand, two hundred fifty-four".