42413021 has 4 divisors (see below), whose sum is σ = 48472032. Its totient is φ = 36354012.

The previous prime is 42413009. The next prime is 42413023. The reversal of 42413021 is 12031424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42413021 - 2⁶ = 42412957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42413023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3029495 + ... + 3029508.

It is an arithmetic number, because the mean of its divisors is an integer number (12118008).

Almost surely, 2^42413021 is an apocalyptic number.

It is an amenable number.

42413021 is a deficient number, since it is larger than the sum of its proper divisors (6059011).

42413021 is an equidigital number, since it uses as much as digits as its factorization.

42413021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059010.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42413021 is about 6512.5280037786. The cubic root of 42413021 is about 348.7383720210.

Adding to 42413021 its reverse (12031424), we get a palindrome (54444445).

The spelling of 42413021 in words is "forty-two million, four hundred thirteen thousand, twenty-one".