2040421402 has 16 divisors (see below), whose sum is σ = 3196402560. Its totient is φ = 975028912.

The previous prime is 2040421363. The next prime is 2040421403. The reversal of 2040421402 is 2041240402.

It is a self number, because there is not a number n which added to its sum of digits gives 2040421402.

It is not an unprimeable number, because it can be changed into a prime (2040421403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38124 + ... + 74392.

It is an arithmetic number, because the mean of its divisors is an integer number (199775160).

Almost surely, 2^2040421402 is an apocalyptic number.

2040421402 is a deficient number, since it is larger than the sum of its proper divisors (1155981158).

2040421402 is a wasteful number, since it uses less digits than its factorization.

2040421402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37517.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2040421402 is about 45171.0239202080. The cubic root of 2040421402 is about 1268.3524634088.

Adding to 2040421402 its reverse (2041240402), we get a palindrome (4081661804).

The spelling of 2040421402 in words is "two billion, forty million, four hundred twenty-one thousand, four hundred two".