413400021 has 4 divisors (see below), whose sum is σ = 551200032. Its totient is φ = 275600012.

The previous prime is 413400019. The next prime is 413400023. The reversal of 413400021 is 120004314.

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 (413400019) and next prime (413400023).

It is a cyclic number.

It is not a de Polignac number, because 413400021 - 2¹ = 413400019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413400023) 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, 68900001 + ... + 68900006.

It is an arithmetic number, because the mean of its divisors is an integer number (137800008).

Almost surely, 2^413400021 is an apocalyptic number.

It is an amenable number.

413400021 is a deficient number, since it is larger than the sum of its proper divisors (137800011).

413400021 is a wasteful number, since it uses less digits than its factorization.

413400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137800010.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 413400021 is about 20332.2409242071. The cubic root of 413400021 is about 744.9437796712.

Adding to 413400021 its reverse (120004314), we get a palindrome (533404335).

The spelling of 413400021 in words is "four hundred thirteen million, four hundred thousand, twenty-one".