19200042 has 12 divisors (see below), whose sum is σ = 41600130. Its totient is φ = 6400008.

The previous prime is 19200037. The next prime is 19200053. The reversal of 19200042 is 24000291.

It can be written as a sum of positive squares in only one way, i.e., 13905441 + 5294601 = 3729^2 + 2301^2 .

It is a super-2 number, since 2×19200042² = 737283225603528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1066669 = 19200042 / (1 + 9 + 2 + 0 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 19199988 and 19200024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 533317 + ... + 533352.

Almost surely, 2^19200042 is an apocalyptic number.

19200042 is an abundant number, since it is smaller than the sum of its proper divisors (22400088).

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

19200042 is a wasteful number, since it uses less digits than its factorization.

19200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066677 (or 1066674 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 19200042 is about 4381.7852526111. The cubic root of 19200042 is about 267.7733752840.

The spelling of 19200042 in words is "nineteen million, two hundred thousand, forty-two".