6402123134 has 16 divisors (see below), whose sum is σ = 10500523776. Its totient is φ = 2903299800.

The previous prime is 6402123121. The next prime is 6402123187. The reversal of 6402123134 is 4313212046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328112 + ... + 347075.

It is an arithmetic number, because the mean of its divisors is an integer number (656282736).

Almost surely, 2^6402123134 is an apocalyptic number.

6402123134 is a deficient number, since it is larger than the sum of its proper divisors (4098400642).

6402123134 is a wasteful number, since it uses less digits than its factorization.

6402123134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675631.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6402123134 is about 80013.2684871703. The cubic root of 6402123134 is about 1856.8408173104.

It can be divided in two parts, 640212 and 3134, that added together give a palindrome (643346).

The spelling of 6402123134 in words is "six billion, four hundred two million, one hundred twenty-three thousand, one hundred thirty-four".