7021442 has 16 divisors (see below), whose sum is σ = 11271960. Its totient is φ = 3268608.

The previous prime is 7021439. The next prime is 7021457. The reversal of 7021442 is 2441207.

It can be written as a sum of positive squares in 4 ways, for example, as 5958481 + 1062961 = 2441^2 + 1031^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234 + ... + 4362.

Almost surely, 2^7021442 is an apocalyptic number.

7021442 is a deficient number, since it is larger than the sum of its proper divisors (4250518).

7021442 is a wasteful number, since it uses less digits than its factorization.

7021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 7021442 is about 2649.8003698392. The cubic root of 7021442 is about 191.4882385685.

Adding to 7021442 its reverse (2441207), we get a palindrome (9462649).

It can be divided in two parts, 70 and 21442, that added together give a palindrome (21512).

The spelling of 7021442 in words is "seven million, twenty-one thousand, four hundred forty-two".