7121042 has 4 divisors (see below), whose sum is σ = 10681566. Its totient is φ = 3560520.

The previous prime is 7121033. The next prime is 7121071. The reversal of 7121042 is 2401217.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5707321 + 1413721 = 2389^2 + 1189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7121042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780259 + ... + 1780262.

Almost surely, 2^7121042 is an apocalyptic number.

7121042 is a deficient number, since it is larger than the sum of its proper divisors (3560524).

7121042 is a wasteful number, since it uses less digits than its factorization.

7121042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560523.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 7121042 is about 2668.5280586870. The cubic root of 7121042 is about 192.3894186950.

Adding to 7121042 its reverse (2401217), we get a palindrome (9522259).

The spelling of 7121042 in words is "seven million, one hundred twenty-one thousand, forty-two".