19876042 has 4 divisors (see below), whose sum is σ = 29814066. Its totient is φ = 9938020.

The previous prime is 19876039. The next prime is 19876061. The reversal of 19876042 is 24067891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16982641 + 2893401 = 4121^2 + 1701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19875992 and 19876010.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969009 + ... + 4969012.

Almost surely, 2^19876042 is an apocalyptic number.

19876042 is a deficient number, since it is larger than the sum of its proper divisors (9938024).

19876042 is an equidigital number, since it uses as much as digits as its factorization.

19876042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938023.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 19876042 is about 4458.2554884170. The cubic root of 19876042 is about 270.8798094494.

The spelling of 19876042 in words is "nineteen million, eight hundred seventy-six thousand, forty-two".