878142059 has 4 divisors (see below), whose sum is σ = 899560200. Its totient is φ = 856723920.

The previous prime is 878142049. The next prime is 878142061. The reversal of 878142059 is 950241878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 950241878 = 2 ⋅475120939.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-878142059 is a prime.

It is a super-2 number, since 2×878142059² = 1542266951569518962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (878142029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709009 + ... + 10709090.

It is an arithmetic number, because the mean of its divisors is an integer number (224890050).

Almost surely, 2^878142059 is an apocalyptic number.

878142059 is a deficient number, since it is larger than the sum of its proper divisors (21418141).

878142059 is a wasteful number, since it uses less digits than its factorization.

878142059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21418140.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 878142059 is about 29633.4618126199. The cubic root of 878142059 is about 957.6090890032.

The spelling of 878142059 in words is "eight hundred seventy-eight million, one hundred forty-two thousand, fifty-nine".