19434642 has 8 divisors (see below), whose sum is σ = 38869296. Its totient is φ = 6478212.

The previous prime is 19434637. The next prime is 19434643. The reversal of 19434642 is 24643491.

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

19434642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (19434643) 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, 1619548 + ... + 1619559.

It is an arithmetic number, because the mean of its divisors is an integer number (4858662).

Almost surely, 2^19434642 is an apocalyptic number.

19434642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19434642 is a wasteful number, since it uses less digits than its factorization.

19434642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239112.

The product of its digits is 20736, while the sum is 33.

The square root of 19434642 is about 4408.4738855981. The cubic root of 19434642 is about 268.8595794715.

The spelling of 19434642 in words is "nineteen million, four hundred thirty-four thousand, six hundred forty-two".