402387020026 has 16 divisors (see below), whose sum is σ = 616446754560. Its totient is φ = 196905103120.

The previous prime is 402387020017. The next prime is 402387020059. The reversal of 402387020026 is 620020783204.

It is a junction number, because it is equal to n+sod(n) for n = 402387019973 and 402387020000.

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 7 ways as a sum of consecutive naturals, for example, 2896995 + ... + 3032713.

It is an arithmetic number, because the mean of its divisors is an integer number (38527922160).

Almost surely, 2^402387020026 is an apocalyptic number.

402387020026 is a deficient number, since it is larger than the sum of its proper divisors (214059734534).

402387020026 is a wasteful number, since it uses less digits than its factorization.

402387020026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167309.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 402387020026 in words is "four hundred two billion, three hundred eighty-seven million, twenty thousand, twenty-six".