402020102 has 16 divisors (see below), whose sum is σ = 661796352. Its totient is φ = 181640520.

The previous prime is 402020039. The next prime is 402020111. The reversal of 402020102 is 201020204.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a congruent number.

It is an unprimeable number.

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, 51038 + ... + 58385.

It is an arithmetic number, because the mean of its divisors is an integer number (41362272).

Almost surely, 2^402020102 is an apocalyptic number.

402020102 is a deficient number, since it is larger than the sum of its proper divisors (259776250).

402020102 is a wasteful number, since it uses less digits than its factorization.

402020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109603.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 402020102 is about 20050.4389478136. The cubic root of 402020102 is about 738.0445707665.

Adding to 402020102 its reverse (201020204), we get a palindrome (603040306).

The spelling of 402020102 in words is "four hundred two million, twenty thousand, one hundred two".