19428542 has 16 divisors (see below), whose sum is σ = 33603552. Its totient is φ = 8252160.

The previous prime is 19428533. The next prime is 19428551. The reversal of 19428542 is 24582491.

It is an interprime number because it is at equal distance from previous prime (19428533) and next prime (19428551).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4559 + ... + 7722.

It is an arithmetic number, because the mean of its divisors is an integer number (2100222).

Almost surely, 2^19428542 is an apocalyptic number.

19428542 is a deficient number, since it is larger than the sum of its proper divisors (14175010).

19428542 is a wasteful number, since it uses less digits than its factorization.

19428542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its digits is 23040, while the sum is 35.

The square root of 19428542 is about 4407.7819819043. The cubic root of 19428542 is about 268.8314473170.

The spelling of 19428542 in words is "nineteen million, four hundred twenty-eight thousand, five hundred forty-two".