414243021 has 4 divisors (see below), whose sum is σ = 552324032. Its totient is φ = 276162012.

The previous prime is 414243019. The next prime is 414243023. The reversal of 414243021 is 120342414.

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 an interprime number because it is at equal distance from previous prime (414243019) and next prime (414243023).

It is not a de Polignac number, because 414243021 - 2¹ = 414243019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (414243023) 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, 69040501 + ... + 69040506.

It is an arithmetic number, because the mean of its divisors is an integer number (138081008).

Almost surely, 2^414243021 is an apocalyptic number.

It is an amenable number.

414243021 is a deficient number, since it is larger than the sum of its proper divisors (138081011).

414243021 is a wasteful number, since it uses less digits than its factorization.

414243021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138081010.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 414243021 is about 20352.9609885147. The cubic root of 414243021 is about 745.4497957943.

Adding to 414243021 its reverse (120342414), we get a palindrome (534585435).

The spelling of 414243021 in words is "four hundred fourteen million, two hundred forty-three thousand, twenty-one".