421213401 has 12 divisors (see below), whose sum is σ = 695336512. Its totient is φ = 240693336.

The previous prime is 421213343. The next prime is 421213409. The reversal of 421213401 is 104312124.

It is not a de Polignac number, because 421213401 - 2¹⁴ = 421197017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421213409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3342901 + ... + 3343026.

Almost surely, 2^421213401 is an apocalyptic number.

It is an amenable number.

421213401 is a deficient number, since it is larger than the sum of its proper divisors (274123111).

421213401 is a wasteful number, since it uses less digits than its factorization.

421213401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685940 (or 6685937 counting only the distinct ones).

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

The square root of 421213401 is about 20523.4841340353. The cubic root of 421213401 is about 749.6077362079.

Adding to 421213401 its reverse (104312124), we get a palindrome (525525525).

The spelling of 421213401 in words is "four hundred twenty-one million, two hundred thirteen thousand, four hundred one".