10420203402 has 96 divisors (see below), whose sum is σ = 27187729920. Its totient is φ = 2817672480.

The previous prime is 10420203371. The next prime is 10420203463. The reversal of 10420203402 is 20430202401.

10420203402 is a `hidden beast` number, since 1 + 0 + 420 + 203 + 40 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3663793 + ... + 3666635.

It is an arithmetic number, because the mean of its divisors is an integer number (283205520).

Almost surely, 2^10420203402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10420203402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13593864960).

10420203402 is an abundant number, since it is smaller than the sum of its proper divisors (16767526518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10420203402 is a wasteful number, since it uses less digits than its factorization.

10420203402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408 (or 4405 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 10420203402 its reverse (20430202401), we get a palindrome (30850405803).

The spelling of 10420203402 in words is "ten billion, four hundred twenty million, two hundred three thousand, four hundred two".