421097233 has 2 divisors, whose sum is σ = 421097234. Its totient is φ = 421097232.

The previous prime is 421097221. The next prime is 421097249. The reversal of 421097233 is 332790124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351675009 + 69422224 = 18753^2 + 8332^2 .

It is a cyclic number.

It is not a de Polignac number, because 421097233 - 2¹³ = 421089041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421097195 and 421097204.

It is not a weakly prime, because it can be changed into another prime (421097203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210548616 + 210548617.

It is an arithmetic number, because the mean of its divisors is an integer number (210548617).

Almost surely, 2^421097233 is an apocalyptic number.

It is an amenable number.

421097233 is a deficient number, since it is larger than the sum of its proper divisors (1).

421097233 is an equidigital number, since it uses as much as digits as its factorization.

421097233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 421097233 is about 20520.6538151200. The cubic root of 421097233 is about 749.5388175094.

The spelling of 421097233 in words is "four hundred twenty-one million, ninety-seven thousand, two hundred thirty-three".