42199421 has 8 divisors (see below), whose sum is σ = 46137600. Its totient is φ = 38278240.

The previous prime is 42199403. The next prime is 42199483. The reversal of 42199421 is 12499124.

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

It is not a de Polignac number, because 42199421 - 2²² = 38005117 is a prime.

It is a super-2 number, since 2×42199421² = 3561582265470482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42199021) 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, 1265 + ... + 9273.

It is an arithmetic number, because the mean of its divisors is an integer number (5767200).

Almost surely, 2^42199421 is an apocalyptic number.

It is an amenable number.

42199421 is a deficient number, since it is larger than the sum of its proper divisors (3938179).

42199421 is a wasteful number, since it uses less digits than its factorization.

42199421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499.

The product of its digits is 5184, while the sum is 32.

The square root of 42199421 is about 6496.1081425728. The cubic root of 42199421 is about 348.1519489918.

The spelling of 42199421 in words is "forty-two million, one hundred ninety-nine thousand, four hundred twenty-one".