42414021 has 24 divisors (see below), whose sum is σ = 66426360. Its totient is φ = 25923456.

The previous prime is 42414017. The next prime is 42414077. The reversal of 42414021 is 12041424.

It can be written as a sum of positive squares in 4 ways, for example, as 3101121 + 39312900 = 1761^2 + 6270^2 .

It is not a de Polignac number, because 42414021 - 2² = 42414017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42413985 and 42414003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42414011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17215 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (2767765).

Almost surely, 2^42414021 is an apocalyptic number.

It is an amenable number.

42414021 is a deficient number, since it is larger than the sum of its proper divisors (24012339).

42414021 is a wasteful number, since it uses less digits than its factorization.

42414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 42414021 is about 6512.6047784278. The cubic root of 42414021 is about 348.7411128116.

Adding to 42414021 its reverse (12041424), we get a palindrome (54455445).

The spelling of 42414021 in words is "forty-two million, four hundred fourteen thousand, twenty-one".