7121442 has 32 divisors (see below), whose sum is σ = 14705280. Its totient is φ = 2298240.

The previous prime is 7121441. The next prime is 7121473. The reversal of 7121442 is 2441217.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30984 + ... + 31212.

It is an arithmetic number, because the mean of its divisors is an integer number (459540).

Almost surely, 2^7121442 is an apocalyptic number.

7121442 is an abundant number, since it is smaller than the sum of its proper divisors (7583838).

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

7121442 is a wasteful number, since it uses less digits than its factorization.

7121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its digits is 448, while the sum is 21.

The square root of 7121442 is about 2668.6030053194. The cubic root of 7121442 is about 192.3930208985.

Adding to 7121442 its reverse (2441217), we get a palindrome (9562659).

The spelling of 7121442 in words is "seven million, one hundred twenty-one thousand, four hundred forty-two".