4122154 has 4 divisors (see below), whose sum is σ = 6183234. Its totient is φ = 2061076.

The previous prime is 4122121. The next prime is 4122169. The reversal of 4122154 is 4512214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3980025 + 142129 = 1995^2 + 377^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1030537 + ... + 1030540.

Almost surely, 2^4122154 is an apocalyptic number.

4122154 is a deficient number, since it is larger than the sum of its proper divisors (2061080).

4122154 is a wasteful number, since it uses less digits than its factorization.

4122154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061079.

The product of its digits is 320, while the sum is 19.

The square root of 4122154 is about 2030.3088435014. The cubic root of 4122154 is about 160.3398246092.

Adding to 4122154 its reverse (4512214), we get a palindrome (8634368).

The spelling of 4122154 in words is "four million, one hundred twenty-two thousand, one hundred fifty-four".