402140065 has 8 divisors (see below), whose sum is σ = 482686848. Its totient is φ = 321632880.

The previous prime is 402140051. The next prime is 402140069. The reversal of 402140065 is 560041204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402140065 - 2⁵ = 402140033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402140069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21514 + ... + 35596.

It is an arithmetic number, because the mean of its divisors is an integer number (60335856).

Almost surely, 2^402140065 is an apocalyptic number.

It is an amenable number.

402140065 is a deficient number, since it is larger than the sum of its proper divisors (80546783).

402140065 is a wasteful number, since it uses less digits than its factorization.

402140065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 402140065 is about 20053.4302551957. The cubic root of 402140065 is about 738.1179744224.

Adding to 402140065 its reverse (560041204), we get a palindrome (962181269).

The spelling of 402140065 in words is "four hundred two million, one hundred forty thousand, sixty-five".