6401594042 has 8 divisors (see below), whose sum is σ = 9605784276. Its totient is φ = 3199665952.

The previous prime is 6401594041. The next prime is 6401594053. The reversal of 6401594042 is 2404951046.

It can be written as a sum of positive squares in 2 ways, for example, as 6369795721 + 31798321 = 79811^2 + 5639^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6401593993 and 6401594011.

It is not an unprimeable number, because it can be changed into a prime (6401594041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558443 + ... + 569790.

Almost surely, 2^6401594042 is an apocalyptic number.

6401594042 is a deficient number, since it is larger than the sum of its proper divisors (3204190234).

6401594042 is a wasteful number, since it uses less digits than its factorization.

6401594042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131072.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 6401594042 is about 80009.9621422233. The cubic root of 6401594042 is about 1856.7896641400.

The spelling of 6401594042 in words is "six billion, four hundred one million, five hundred ninety-four thousand, forty-two".