42069691194427 has 4 divisors (see below), whose sum is σ = 45305821286320. Its totient is φ = 38833561102536.

The previous prime is 42069691194359. The next prime is 42069691194437. The reversal of 42069691194427 is 72449119696024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42069691194427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42069691194437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1618065045927 + ... + 1618065045952.

It is an arithmetic number, because the mean of its divisors is an integer number (11326455321580).

Almost surely, 2^{42069691194427} is an apocalyptic number.

42069691194427 is a deficient number, since it is larger than the sum of its proper divisors (3236130091893).

42069691194427 is a wasteful number, since it uses less digits than its factorization.

42069691194427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236130091892.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 42069691194427 in words is "forty-two trillion, sixty-nine billion, six hundred ninety-one million, one hundred ninety-four thousand, four hundred twenty-seven".