402666142505 has 32 divisors (see below), whose sum is σ = 528089535360. Its totient is φ = 292313710080.

The previous prime is 402666142453. The next prime is 402666142519. The reversal of 402666142505 is 505241666204.

It is not a de Polignac number, because 402666142505 - 2¹⁰ = 402666141481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85254074 + ... + 85258796.

It is an arithmetic number, because the mean of its divisors is an integer number (16502797980).

Almost surely, 2^402666142505 is an apocalyptic number.

It is an amenable number.

402666142505 is a deficient number, since it is larger than the sum of its proper divisors (125423392855).

402666142505 is a wasteful number, since it uses less digits than its factorization.

402666142505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 402666142505 in words is "four hundred two billion, six hundred sixty-six million, one hundred forty-two thousand, five hundred five".