10078021 has 4 divisors (see below), whose sum is σ = 10095232. Its totient is φ = 10060812.

The previous prime is 10077983. The next prime is 10078027. The reversal of 10078021 is 12087001.

10078021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10078021 - 2¹¹ = 10075973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10078021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10078027) 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, 7695 + ... + 8908.

It is an arithmetic number, because the mean of its divisors is an integer number (2523808).

Almost surely, 2^10078021 is an apocalyptic number.

It is an amenable number.

10078021 is a deficient number, since it is larger than the sum of its proper divisors (17211).

10078021 is an equidigital number, since it uses as much as digits as its factorization.

10078021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17210.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 10078021 is about 3174.5898947738. The cubic root of 10078021 is about 216.0023219343.

The spelling of 10078021 in words is "ten million, seventy-eight thousand, twenty-one".