2021402 has 8 divisors (see below), whose sum is σ = 3210516. Its totient is φ = 951232.

The previous prime is 2021381. The next prime is 2021431. The reversal of 2021402 is 2041202.

It can be written as a sum of positive squares in 2 ways, for example, as 1819801 + 201601 = 1349^2 + 449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29693 + ... + 29760.

2^2021402 is an apocalyptic number.

2021402 is a deficient number, since it is larger than the sum of its proper divisors (1189114).

2021402 is a wasteful number, since it uses less digits than its factorization.

2021402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59472.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2021402 is about 1421.7601766824. The cubic root of 2021402 is about 126.4399252316.

Adding to 2021402 its reverse (2041202), we get a palindrome (4062604).

The spelling of 2021402 in words is "two million, twenty-one thousand, four hundred two".