7042122 has 48 divisors (see below), whose sum is σ = 16380000. Its totient is φ = 2179872.

The previous prime is 7042121. The next prime is 7042129. The reversal of 7042122 is 2212407.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 7042095 and 7042104.

It is not an unprimeable number, because it can be changed into a prime (7042121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20004 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (341250).

Almost surely, 2^7042122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7042122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8190000).

7042122 is an abundant number, since it is smaller than the sum of its proper divisors (9337878).

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

7042122 is a wasteful number, since it uses less digits than its factorization.

7042122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 7042122 is about 2653.6996815766. The cubic root of 7042122 is about 191.6760487741.

Adding to 7042122 its reverse (2212407), we get a palindrome (9254529).

The spelling of 7042122 in words is "seven million, forty-two thousand, one hundred twenty-two".