420340413 has 16 divisors (see below), whose sum is σ = 582120000. Its totient is φ = 269472000.

The previous prime is 420340397. The next prime is 420340423. The reversal of 420340413 is 314043024.

It is not a de Polignac number, because 420340413 - 2⁴ = 420340397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420340413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420340423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12213 + ... + 31461.

It is an arithmetic number, because the mean of its divisors is an integer number (36382500).

Almost surely, 2^420340413 is an apocalyptic number.

It is an amenable number.

420340413 is a deficient number, since it is larger than the sum of its proper divisors (161779587).

420340413 is a wasteful number, since it uses less digits than its factorization.

420340413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 420340413 is about 20502.2050765277. The cubic root of 420340413 is about 749.0895102362.

Adding to 420340413 its reverse (314043024), we get a palindrome (734383437).

The spelling of 420340413 in words is "four hundred twenty million, three hundred forty thousand, four hundred thirteen".