402121702034 has 16 divisors (see below), whose sum is σ = 650439342168. Its totient is φ = 185349451392.

The previous prime is 402121702013. The next prime is 402121702051. The reversal of 402121702034 is 430207121204.

It can be written as a sum of positive squares in 4 ways, for example, as 385326838009 + 16794864025 = 620747^2 + 129595^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 402121701994 and 402121702012.

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, 10195787 + ... + 10235150.

Almost surely, 2^402121702034 is an apocalyptic number.

402121702034 is a deficient number, since it is larger than the sum of its proper divisors (248317640134).

402121702034 is a wasteful number, since it uses less digits than its factorization.

402121702034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20431709.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 402121702034 its reverse (430207121204), we get a palindrome (832328823238).

The spelling of 402121702034 in words is "four hundred two billion, one hundred twenty-one million, seven hundred two thousand, thirty-four".