7122156 has 12 divisors (see below), whose sum is σ = 16618392. Its totient is φ = 2374048.

The previous prime is 7122149. The next prime is 7122179. The reversal of 7122156 is 6512217.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

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 in 3 ways as a sum of consecutive naturals, for example, 296745 + ... + 296768.

It is an arithmetic number, because the mean of its divisors is an integer number (1384866).

Almost surely, 2^7122156 is an apocalyptic number.

It is an amenable number.

7122156 is an abundant number, since it is smaller than the sum of its proper divisors (9496236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7122156 is a wasteful number, since it uses less digits than its factorization.

7122156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593520 (or 593518 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 7122156 is about 2668.7367798267. The cubic root of 7122156 is about 192.3994504964.

It can be divided in two parts, 712215 and 6, that added together give a triangular number (712221 = T₁₁₉₃).

The spelling of 7122156 in words is "seven million, one hundred twenty-two thousand, one hundred fifty-six".