55042368421 has 8 divisors (see below), whose sum is σ = 58019932800. Its totient is φ = 52072863840.

The previous prime is 55042368391. The next prime is 55042368523. The reversal of 55042368421 is 12486324055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55042368421 - 2³¹ = 52894884773 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 (55042360421) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2000920 + ... + 2028241.

It is an arithmetic number, because the mean of its divisors is an integer number (7252491600).

Almost surely, 2^55042368421 is an apocalyptic number.

It is an amenable number.

55042368421 is a deficient number, since it is larger than the sum of its proper divisors (2977564379).

55042368421 is a wasteful number, since it uses less digits than its factorization.

55042368421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029899.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 55042368421 in words is "fifty-five billion, forty-two million, three hundred sixty-eight thousand, four hundred twenty-one".