671129426 has 16 divisors (see below), whose sum is σ = 1136082240. Its totient is φ = 294539280.

The previous prime is 671129401. The next prime is 671129429. The reversal of 671129426 is 624921176.

It is a self number, because there is not a number n which added to its sum of digits gives 671129426.

It is not an unprimeable number, because it can be changed into a prime (671129429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525326 + ... + 526601.

It is an arithmetic number, because the mean of its divisors is an integer number (71005140).

Almost surely, 2^671129426 is an apocalyptic number.

671129426 is a deficient number, since it is larger than the sum of its proper divisors (464952814).

671129426 is a wasteful number, since it uses less digits than its factorization.

671129426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051969.

The product of its digits is 36288, while the sum is 38.

The square root of 671129426 is about 25906.1657911780. The cubic root of 671129426 is about 875.5254209213.

The spelling of 671129426 in words is "six hundred seventy-one million, one hundred twenty-nine thousand, four hundred twenty-six".