20154122 has 8 divisors (see below), whose sum is σ = 31048356. Its totient is φ = 9804672.

The previous prime is 20154109. The next prime is 20154133. The reversal of 20154122 is 22145102.

It can be written as a sum of positive squares in 2 ways, for example, as 19882681 + 271441 = 4459^2 + 521^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20154122.

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, 136103 + ... + 136250.

Almost surely, 2^20154122 is an apocalyptic number.

20154122 is a deficient number, since it is larger than the sum of its proper divisors (10894234).

20154122 is a wasteful number, since it uses less digits than its factorization.

20154122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272392.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20154122 is about 4489.3342490842. The cubic root of 20154122 is about 272.1372307088.

Adding to 20154122 its reverse (22145102), we get a palindrome (42299224).

The spelling of 20154122 in words is "twenty million, one hundred fifty-four thousand, one hundred twenty-two".