20042277 has 16 divisors (see below), whose sum is σ = 27915840. Its totient is φ = 12774272.

The previous prime is 20042273. The next prime is 20042279. The reversal of 20042277 is 77224002.

It is a cyclic number.

It is not a de Polignac number, because 20042277 - 2² = 20042273 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8233 + ... + 10385.

It is an arithmetic number, because the mean of its divisors is an integer number (1744740).

Almost surely, 2^20042277 is an apocalyptic number.

It is an amenable number.

20042277 is a deficient number, since it is larger than the sum of its proper divisors (7873563).

20042277 is a wasteful number, since it uses less digits than its factorization.

20042277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 20042277 is about 4476.8601720402. The cubic root of 20042277 is about 271.6328894402.

Adding to 20042277 its reverse (77224002), we get a palindrome (97266279).

The spelling of 20042277 in words is "twenty million, forty-two thousand, two hundred seventy-seven".