42069691194439 has 4 divisors (see below), whose sum is σ = 42172551075520. Its totient is φ = 41966831313360.

The previous prime is 42069691194437. The next prime is 42069691194529. The reversal of 42069691194439 is 93449119696024.

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

It is a cyclic number.

It is not a de Polignac number, because 42069691194439 - 2¹ = 42069691194437 is a prime.

It is a Duffinian number.

It is a congruent 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, 51429939927 + ... + 51429940744.

It is an arithmetic number, because the mean of its divisors is an integer number (10543137768880).

Almost surely, 2^{42069691194439} is an apocalyptic number.

42069691194439 is a deficient number, since it is larger than the sum of its proper divisors (102859881081).

42069691194439 is a wasteful number, since it uses less digits than its factorization.

42069691194439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102859881080.

The product of its (nonzero) digits is 90699264, while the sum is 67.

The spelling of 42069691194439 in words is "forty-two trillion, sixty-nine billion, six hundred ninety-one million, one hundred ninety-four thousand, four hundred thirty-nine".