420021340413 has 16 divisors (see below), whose sum is σ = 579779164800. Its totient is φ = 270153517760.

The previous prime is 420021340381. The next prime is 420021340429. The reversal of 420021340413 is 314043120024.

It is a cyclic number.

It is not a de Polignac number, because 420021340413 - 2⁵ = 420021340381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420021340463) 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, 1715358 + ... + 1944863.

It is an arithmetic number, because the mean of its divisors is an integer number (36236197800).

Almost surely, 2^420021340413 is an apocalyptic number.

It is an amenable number.

420021340413 is a deficient number, since it is larger than the sum of its proper divisors (159757824387).

420021340413 is a wasteful number, since it uses less digits than its factorization.

420021340413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661572.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 420021340413 its reverse (314043120024), we get a palindrome (734064460437).

The spelling of 420021340413 in words is "four hundred twenty billion, twenty-one million, three hundred forty thousand, four hundred thirteen".