104665406542 has 4 divisors (see below), whose sum is σ = 156998109816. Its totient is φ = 52332703270.

The previous prime is 104665406507. The next prime is 104665406561. The reversal of 104665406542 is 245604566401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245604566401 = 151243 ⋅1623907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26166351634 + ... + 26166351637.

It is an arithmetic number, because the mean of its divisors is an integer number (39249527454).

Almost surely, 2^104665406542 is an apocalyptic number.

104665406542 is a deficient number, since it is larger than the sum of its proper divisors (52332703274).

104665406542 is an equidigital number, since it uses as much as digits as its factorization.

104665406542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52332703273.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 104665406542 in words is "one hundred four billion, six hundred sixty-five million, four hundred six thousand, five hundred forty-two".