21410402 has 16 divisors (see below), whose sum is σ = 34800192. Its totient is φ = 9820560.

The previous prime is 21410399. The next prime is 21410407. The reversal of 21410402 is 20401412.

It is not an unprimeable number, because it can be changed into a prime (21410407) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1877 + ... + 6807.

It is an arithmetic number, because the mean of its divisors is an integer number (2175012).

Almost surely, 2^21410402 is an apocalyptic number.

21410402 is a deficient number, since it is larger than the sum of its proper divisors (13389790).

21410402 is a wasteful number, since it uses less digits than its factorization.

21410402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 21410402 is about 4627.1375600905. The cubic root of 21410402 is about 277.6780860511.

Adding to 21410402 its reverse (20401412), we get a palindrome (41811814).

It can be divided in two parts, 21410 and 402, that added together give a palindrome (21812).

The spelling of 21410402 in words is "twenty-one million, four hundred ten thousand, four hundred two".