878370642 has 56 divisors (see below), whose sum is σ = 2009108880. Its totient is φ = 287799480.

The previous prime is 878370631. The next prime is 878370653. The reversal of 878370642 is 246073878.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (878370631) and next prime (878370653).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 80917 + ... + 91127.

Almost surely, 2^878370642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878370642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004554440).

878370642 is an abundant number, since it is smaller than the sum of its proper divisors (1130738238).

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

878370642 is a wasteful number, since it uses less digits than its factorization.

878370642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290 (or 10275 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 878370642 is about 29637.3184009620. The cubic root of 878370642 is about 957.6921712965.

The spelling of 878370642 in words is "eight hundred seventy-eight million, three hundred seventy thousand, six hundred forty-two".