3919420842 has 16 divisors (see below), whose sum is σ = 7840971072. Its totient is φ = 1306118720.

The previous prime is 3919420831. The next prime is 3919420849. The reversal of 3919420842 is 2480249193.

It is a junction number, because it is equal to n+sod(n) for n = 3919420794 and 3919420803.

It is not an unprimeable number, because it can be changed into a prime (3919420849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64278 + ... + 109409.

It is an arithmetic number, because the mean of its divisors is an integer number (490060692).

Almost surely, 2^3919420842 is an apocalyptic number.

3919420842 is an abundant number, since it is smaller than the sum of its proper divisors (3921550230).

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

3919420842 is a wasteful number, since it uses less digits than its factorization.

3919420842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177453.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 3919420842 is about 62605.2780682268. The cubic root of 3919420842 is about 1576.6693769549.

The spelling of 3919420842 in words is "three billion, nine hundred nineteen million, four hundred twenty thousand, eight hundred forty-two".