4220156 has 6 divisors (see below), whose sum is σ = 7385280. Its totient is φ = 2110076.

The previous prime is 4220143. The next prime is 4220173. The reversal of 4220156 is 6510224.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527516 + ... + 527523.

It is an arithmetic number, because the mean of its divisors is an integer number (1230880).

Almost surely, 2^4220156 is an apocalyptic number.

It is an amenable number.

4220156 is a deficient number, since it is larger than the sum of its proper divisors (3165124).

4220156 is a wasteful number, since it uses less digits than its factorization.

4220156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055043 (or 1055041 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4220156 is about 2054.3018278724. The cubic root of 4220156 is about 161.6005501893.

The spelling of 4220156 in words is "four million, two hundred twenty thousand, one hundred fifty-six".