42909407018 has 8 divisors (see below), whose sum is σ = 64409795460. Its totient is φ = 21439475200.

The previous prime is 42909406999. The next prime is 42909407033. The reversal of 42909407018 is 81070490924.

It can be written as a sum of positive squares in 2 ways, for example, as 33427905889 + 9481501129 = 182833^2 + 97373^2 .

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

It is a super-4 number, since 4×42909407018⁴ (a number of 44 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42909407018.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7610633 + ... + 7616268.

Almost surely, 2^42909407018 is an apocalyptic number.

42909407018 is a deficient number, since it is larger than the sum of its proper divisors (21500388442).

42909407018 is a wasteful number, since it uses less digits than its factorization.

42909407018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15228312.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 42909407018 in words is "forty-two billion, nine hundred nine million, four hundred seven thousand, eighteen".