42242004391 has 4 divisors (see below), whose sum is σ = 44465267800. Its totient is φ = 40018740984.

The previous prime is 42242004361. The next prime is 42242004433. The reversal of 42242004391 is 19340024224.

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 42242004391 - 2⁹ = 42242003879 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 (42242004361) 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, 1111631676 + ... + 1111631713.

It is an arithmetic number, because the mean of its divisors is an integer number (11116316950).

Almost surely, 2^42242004391 is an apocalyptic number.

42242004391 is a deficient number, since it is larger than the sum of its proper divisors (2223263409).

42242004391 is a wasteful number, since it uses less digits than its factorization.

42242004391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223263408.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 42242004391 in words is "forty-two billion, two hundred forty-two million, four thousand, three hundred ninety-one".