7021045 has 16 divisors (see below), whose sum is σ = 8935920. Its totient is φ = 5286400.

The previous prime is 7021033. The next prime is 7021057. The reversal of 7021045 is 5401207.

It is an interprime number because it is at equal distance from previous prime (7021033) and next prime (7021057).

It can be written as a sum of positive squares in 8 ways, for example, as 62001 + 6959044 = 249^2 + 2638^2 .

It is not a de Polignac number, because 7021045 - 2¹¹ = 7018997 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 5355 + ... + 6535.

It is an arithmetic number, because the mean of its divisors is an integer number (558495).

Almost surely, 2^7021045 is an apocalyptic number.

It is an amenable number.

7021045 is a deficient number, since it is larger than the sum of its proper divisors (1914875).

7021045 is a wasteful number, since it uses less digits than its factorization.

7021045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 7021045 is about 2649.7254574767. The cubic root of 7021045 is about 191.4846295158.

It can be divided in two parts, 70 and 21045, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 7021045 in words is "seven million, twenty-one thousand, forty-five".