1421801233 has 2 divisors, whose sum is σ = 1421801234. Its totient is φ = 1421801232.

The previous prime is 1421801167. The next prime is 1421801243. The reversal of 1421801233 is 3321081241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770173504 + 651627729 = 27752^2 + 25527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421801233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421801198 and 1421801207.

It is not a weakly prime, because it can be changed into another prime (1421801243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710900616 + 710900617.

It is an arithmetic number, because the mean of its divisors is an integer number (710900617).

Almost surely, 2^1421801233 is an apocalyptic number.

It is an amenable number.

1421801233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421801233 is an equidigital number, since it uses as much as digits as its factorization.

1421801233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1421801233 is about 37706.7796689137. The cubic root of 1421801233 is about 1124.4659148494.

Adding to 1421801233 its reverse (3321081241), we get a palindrome (4742882474).

The spelling of 1421801233 in words is "one billion, four hundred twenty-one million, eight hundred one thousand, two hundred thirty-three".