42348021 has 8 divisors (see below), whose sum is σ = 57259584. Its totient is φ = 27834240.

The previous prime is 42348013. The next prime is 42348043. The reversal of 42348021 is 12084324.

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

It is not a de Polignac number, because 42348021 - 2³ = 42348013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42347982 and 42348000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42348521) 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, 99196 + ... + 99621.

It is an arithmetic number, because the mean of its divisors is an integer number (7157448).

Almost surely, 2^42348021 is an apocalyptic number.

It is an amenable number.

42348021 is a deficient number, since it is larger than the sum of its proper divisors (14911563).

42348021 is a wasteful number, since it uses less digits than its factorization.

42348021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198891.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42348021 is about 6507.5357086996. The cubic root of 42348021 is about 348.5601281433.

The spelling of 42348021 in words is "forty-two million, three hundred forty-eight thousand, twenty-one".