402002105 has 8 divisors (see below), whose sum is σ = 490579200. Its totient is φ = 316150576.

The previous prime is 402002101. The next prime is 402002113. The reversal of 402002105 is 501200204.

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

It is a cyclic number.

It is not a de Polignac number, because 402002105 - 2² = 402002101 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402002105.

It is not an unprimeable number, because it can be changed into a prime (402002101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681065 + ... + 681654.

It is an arithmetic number, because the mean of its divisors is an integer number (61322400).

Almost surely, 2^402002105 is an apocalyptic number.

It is an amenable number.

402002105 is a deficient number, since it is larger than the sum of its proper divisors (88577095).

402002105 is a wasteful number, since it uses less digits than its factorization.

402002105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362783.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 402002105 is about 20049.9901496235. The cubic root of 402002105 is about 738.0335573982.

Adding to 402002105 its reverse (501200204), we get a palindrome (903202309).

The spelling of 402002105 in words is "four hundred two million, two thousand, one hundred five".