421235401 has 16 divisors (see below), whose sum is σ = 452402496. Its totient is φ = 390813696.

The previous prime is 421235389. The next prime is 421235449. The reversal of 421235401 is 104532124.

It is a cyclic number.

It is not a de Polignac number, because 421235401 - 2¹¹ = 421233353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421235461) 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, 769810 + ... + 770356.

It is an arithmetic number, because the mean of its divisors is an integer number (28275156).

Almost surely, 2^421235401 is an apocalyptic number.

It is an amenable number.

421235401 is a deficient number, since it is larger than the sum of its proper divisors (31167095).

421235401 is a wasteful number, since it uses less digits than its factorization.

421235401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421235401 is about 20524.0200984115. The cubic root of 421235401 is about 749.6207866657.

Adding to 421235401 its reverse (104532124), we get a palindrome (525767525).

It can be divided in two parts, 42123 and 5401, that added together give a square (47524 = 218²).

The spelling of 421235401 in words is "four hundred twenty-one million, two hundred thirty-five thousand, four hundred one".