421306097 has 4 divisors (see below), whose sum is σ = 423829056. Its totient is φ = 418783140.

The previous prime is 421306043. The next prime is 421306139. The reversal of 421306097 is 790603124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421306097 - 2⁶ = 421306033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421306297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261229 + ... + 1261562.

It is an arithmetic number, because the mean of its divisors is an integer number (105957264).

Almost surely, 2^421306097 is an apocalyptic number.

It is an amenable number.

421306097 is a deficient number, since it is larger than the sum of its proper divisors (2522959).

421306097 is a wasteful number, since it uses less digits than its factorization.

421306097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522958.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 421306097 is about 20525.7423008280. The cubic root of 421306097 is about 749.6627206425.

The spelling of 421306097 in words is "four hundred twenty-one million, three hundred six thousand, ninety-seven".