42840439078 has 32 divisors (see below), whose sum is σ = 68975831232. Its totient is φ = 19906022400.

The previous prime is 42840439049. The next prime is 42840439099. The reversal of 42840439078 is 87093404824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407400 + ... + 501652.

It is an arithmetic number, because the mean of its divisors is an integer number (2155494726).

Almost surely, 2^42840439078 is an apocalyptic number.

42840439078 is a deficient number, since it is larger than the sum of its proper divisors (26135392154).

42840439078 is a wasteful number, since it uses less digits than its factorization.

42840439078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94560.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 42840439078 in words is "forty-two billion, eight hundred forty million, four hundred thirty-nine thousand, seventy-eight".