19926142 has 32 divisors (see below), whose sum is σ = 33530112. Its totient is φ = 8832384.

The previous prime is 19926139. The next prime is 19926143. The reversal of 19926142 is 24162991.

It is a super-2 number, since 2×19926142² = 794102270008328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

Its product of digits (7776) is a multiple of the sum of its prime divisors (432).

It is a junction number, because it is equal to n+sod(n) for n = 19926098 and 19926107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926143) by changing a digit.

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, 64753 + ... + 65059.

It is an arithmetic number, because the mean of its divisors is an integer number (1047816).

Almost surely, 2^19926142 is an apocalyptic number.

19926142 is a deficient number, since it is larger than the sum of its proper divisors (13603970).

19926142 is a wasteful number, since it uses less digits than its factorization.

19926142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 7776, while the sum is 34.

The square root of 19926142 is about 4463.8707418562. The cubic root of 19926142 is about 271.1072137430.

The spelling of 19926142 in words is "nineteen million, nine hundred twenty-six thousand, one hundred forty-two".