20222542 has 8 divisors (see below), whose sum is σ = 30527496. Its totient is φ = 10046712.

The previous prime is 20222473. The next prime is 20222557. The reversal of 20222542 is 24522202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 31888 + ... + 32515.

It is an arithmetic number, because the mean of its divisors is an integer number (3815937).

Almost surely, 2^20222542 is an apocalyptic number.

20222542 is a deficient number, since it is larger than the sum of its proper divisors (10304954).

20222542 is a wasteful number, since it uses less digits than its factorization.

20222542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64562.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20222542 is about 4496.9480761957. The cubic root of 20222542 is about 272.4448369107. Note that the first 3 decimals are identical.

Adding to 20222542 its reverse (24522202), we get a palindrome (44744744).

The spelling of 20222542 in words is "twenty million, two hundred twenty-two thousand, five hundred forty-two".