19443942 has 32 divisors (see below), whose sum is σ = 49382400. Its totient is φ = 5555304.

The previous prime is 19443929. The next prime is 19443953. The reversal of 19443942 is 24934491.

It is a super-3 number, since 3×19443942³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19443897 and 19443906.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 25342 + ... + 26097.

It is an arithmetic number, because the mean of its divisors is an integer number (1543200).

Almost surely, 2^19443942 is an apocalyptic number.

19443942 is an abundant number, since it is smaller than the sum of its proper divisors (29938458).

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

19443942 is a wasteful number, since it uses less digits than its factorization.

19443942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51457 (or 51451 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 19443942 is about 4409.5285462280. The cubic root of 19443942 is about 268.9024581510.

It can be divided in two parts, 194439 and 42, that added together give a 4-th power (194481 = 21⁴).

The spelling of 19443942 in words is "nineteen million, four hundred forty-three thousand, nine hundred forty-two".