42801421 has 8 divisors (see below), whose sum is σ = 47581184. Its totient is φ = 38234160.

The previous prime is 42801389. The next prime is 42801431. The reversal of 42801421 is 12410824.

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

It is not a de Polignac number, because 42801421 - 2⁵ = 42801389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42801392 and 42801401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42801431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52701 + ... + 53506.

It is an arithmetic number, because the mean of its divisors is an integer number (5947648).

Almost surely, 2^42801421 is an apocalyptic number.

It is an amenable number.

42801421 is a deficient number, since it is larger than the sum of its proper divisors (4779763).

42801421 is a wasteful number, since it uses less digits than its factorization.

42801421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106251.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 42801421 is about 6542.2794957110. The cubic root of 42801421 is about 349.7996703932.

The spelling of 42801421 in words is "forty-two million, eight hundred one thousand, four hundred twenty-one".