19309421242 has 16 divisors (see below), whose sum is σ = 30490914240. Its totient is φ = 9153212992.

The previous prime is 19309421179. The next prime is 19309421281. The reversal of 19309421242 is 24212490391.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1852192 + ... + 1862587.

It is an arithmetic number, because the mean of its divisors is an integer number (1905682140).

Almost surely, 2^19309421242 is an apocalyptic number.

19309421242 is a deficient number, since it is larger than the sum of its proper divisors (11181492998).

19309421242 is a wasteful number, since it uses less digits than its factorization.

19309421242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714917.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 19309421242 in words is "nineteen billion, three hundred nine million, four hundred twenty-one thousand, two hundred forty-two".