420113421 has 24 divisors (see below), whose sum is σ = 746869760. Its totient is φ = 221597856.

The previous prime is 420113411. The next prime is 420113431. The reversal of 420113421 is 124311024.

It is an interprime number because it is at equal distance from previous prime (420113411) and next prime (420113431).

It is not a de Polignac number, because 420113421 - 2¹⁴ = 420097037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420113394 and 420113403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420113411) 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, 255661 + ... + 257298.

Almost surely, 2^420113421 is an apocalyptic number.

It is an amenable number.

420113421 is a deficient number, since it is larger than the sum of its proper divisors (326756339).

420113421 is a wasteful number, since it uses less digits than its factorization.

420113421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512985 (or 512982 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 420113421 is about 20496.6685341789. The cubic root of 420113421 is about 748.9546449875.

Adding to 420113421 its reverse (124311024), we get a palindrome (544424445).

The spelling of 420113421 in words is "four hundred twenty million, one hundred thirteen thousand, four hundred twenty-one".