9942278 has 4 divisors (see below), whose sum is σ = 14913420. Its totient is φ = 4971138.

The previous prime is 9942277. The next prime is 9942299. The reversal of 9942278 is 8722499.

9942278 is nontrivially palindromic in base 11.

9942278 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2485568 + ... + 2485571.

It is an arithmetic number, because the mean of its divisors is an integer number (3728355).

Almost surely, 2^9942278 is an apocalyptic number.

9942278 is a deficient number, since it is larger than the sum of its proper divisors (4971142).

9942278 is a wasteful number, since it uses less digits than its factorization.

9942278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971141.

The product of its digits is 72576, while the sum is 41.

The square root of 9942278 is about 3153.1378022535. The cubic root of 9942278 is about 215.0281412597.

The spelling of 9942278 in words is "nine million, nine hundred forty-two thousand, two hundred seventy-eight".