423021078 has 12 divisors (see below), whose sum is σ = 916545708. Its totient is φ = 141007020.

The previous prime is 423021059. The next prime is 423021089. The reversal of 423021078 is 870120324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11750568 + ... + 11750603.

It is an arithmetic number, because the mean of its divisors is an integer number (76378809).

Almost surely, 2^423021078 is an apocalyptic number.

423021078 is an abundant number, since it is smaller than the sum of its proper divisors (493524630).

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

423021078 is a wasteful number, since it uses less digits than its factorization.

423021078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23501179 (or 23501176 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 423021078 is about 20567.4762185349. The cubic root of 423021078 is about 750.6785432536.

The spelling of 423021078 in words is "four hundred twenty-three million, twenty-one thousand, seventy-eight".