578128942 has 4 divisors (see below), whose sum is σ = 867193416. Its totient is φ = 289064470.

The previous prime is 578128921. The next prime is 578128963. The reversal of 578128942 is 249821875.

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

It is an interprime number because it is at equal distance from previous prime (578128921) and next prime (578128963).

It is a junction number, because it is equal to n+sod(n) for n = 578128892 and 578128901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144532234 + ... + 144532237.

It is an arithmetic number, because the mean of its divisors is an integer number (216798354).

Almost surely, 2^578128942 is an apocalyptic number.

578128942 is a deficient number, since it is larger than the sum of its proper divisors (289064474).

578128942 is a wasteful number, since it uses less digits than its factorization.

578128942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289064473.

The product of its digits is 322560, while the sum is 46.

The square root of 578128942 is about 24044.3120508781. The cubic root of 578128942 is about 833.0573563297.

The spelling of 578128942 in words is "five hundred seventy-eight million, one hundred twenty-eight thousand, nine hundred forty-two".