42660398439 has 8 divisors (see below), whose sum is σ = 63200590320. Its totient is φ = 28440265608.

The previous prime is 42660398371. The next prime is 42660398441. The reversal of 42660398439 is 93489306624.

42660398439 is a `hidden beast` number, since 4 + 26 + 603 + 9 + 8 + 4 + 3 + 9 = 666.

42660398439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42660398439 - 2²³ = 42652009831 is a prime.

It is a super-3 number, since 3×42660398439³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42660398479) 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, 790007352 + ... + 790007405.

It is an arithmetic number, because the mean of its divisors is an integer number (7900073790).

Almost surely, 2^42660398439 is an apocalyptic number.

42660398439 is a deficient number, since it is larger than the sum of its proper divisors (20540191881).

42660398439 is a wasteful number, since it uses less digits than its factorization.

42660398439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580014766 (or 1580014760 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 42660398439 in words is "forty-two billion, six hundred sixty million, three hundred ninety-eight thousand, four hundred thirty-nine".