402102827 has 4 divisors (see below), whose sum is σ = 459546096. Its totient is φ = 344659560.

The previous prime is 402102821. The next prime is 402102863. The reversal of 402102827 is 728201204.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 402102827 - 2⁶ = 402102763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402102796 and 402102805.

It is not an unprimeable number, because it can be changed into a prime (402102821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28721624 + ... + 28721637.

It is an arithmetic number, because the mean of its divisors is an integer number (114886524).

Almost surely, 2^402102827 is an apocalyptic number.

402102827 is a deficient number, since it is larger than the sum of its proper divisors (57443269).

402102827 is an equidigital number, since it uses as much as digits as its factorization.

402102827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57443268.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 402102827 is about 20052.5017641191. The cubic root of 402102827 is about 738.0951905817.

The spelling of 402102827 in words is "four hundred two million, one hundred two thousand, eight hundred twenty-seven".