10042420421 has 8 divisors (see below), whose sum is σ = 11599801344. Its totient is φ = 8592445120.

The previous prime is 10042420397. The next prime is 10042420433. The reversal of 10042420421 is 12402424001.

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 10042420421 - 2²⁶ = 9975311557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10042420393 and 10042420402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10042420021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26851205 + ... + 26851578.

It is an arithmetic number, because the mean of its divisors is an integer number (1449975168).

Almost surely, 2^10042420421 is an apocalyptic number.

10042420421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10042420421 is a deficient number, since it is larger than the sum of its proper divisors (1557380923).

10042420421 is a wasteful number, since it uses less digits than its factorization.

10042420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53702811.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10042420421 its reverse (12402424001), we get a palindrome (22444844422).

The spelling of 10042420421 in words is "ten billion, forty-two million, four hundred twenty thousand, four hundred twenty-one".