19540342 has 8 divisors (see below), whose sum is σ = 29521800. Its totient is φ = 9699744.

The previous prime is 19540337. The next prime is 19540343. The reversal of 19540342 is 24304591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19540342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19540343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34867 + ... + 35422.

It is an arithmetic number, because the mean of its divisors is an integer number (3690225).

Almost surely, 2^19540342 is an apocalyptic number.

19540342 is a deficient number, since it is larger than the sum of its proper divisors (9981458).

19540342 is a wasteful number, since it uses less digits than its factorization.

19540342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70430.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 19540342 is about 4420.4459051096. The cubic root of 19540342 is about 269.3461177612.

The spelling of 19540342 in words is "nineteen million, five hundred forty thousand, three hundred forty-two".