4221154 has 24 divisors (see below), whose sum is σ = 7756560. Its totient is φ = 1713096.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221154 is 4511224.

4221154 = T₃₅₆ + T₃₅₇ + ... + T₄₁₂.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729 + ... + 2995.

It is an arithmetic number, because the mean of its divisors is an integer number (323190).

Almost surely, 2^4221154 is an apocalyptic number.

4221154 is a deficient number, since it is larger than the sum of its proper divisors (3535406).

4221154 is a wasteful number, since it uses less digits than its factorization.

4221154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2295 counting only the distinct ones).

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

The square root of 4221154 is about 2054.5447184230. The cubic root of 4221154 is about 161.6132878414.

Adding to 4221154 its reverse (4511224), we get a palindrome (8732378).

The spelling of 4221154 in words is "four million, two hundred twenty-one thousand, one hundred fifty-four".