1233420161 has 2 divisors, whose sum is σ = 1233420162. Its totient is φ = 1233420160.

The previous prime is 1233420101. The next prime is 1233420211. The reversal of 1233420161 is 1610243321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193287936 + 40132225 = 34544^2 + 6335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233420161 - 2¹⁴ = 1233403777 is a prime.

It is a super-2 number, since 2×1233420161² = 3042650587122531842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1233420101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616710080 + 616710081.

It is an arithmetic number, because the mean of its divisors is an integer number (616710081).

Almost surely, 2^1233420161 is an apocalyptic number.

It is an amenable number.

1233420161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233420161 is an equidigital number, since it uses as much as digits as its factorization.

1233420161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1233420161 is about 35120.0820186969. The cubic root of 1233420161 is about 1072.4334405185.

Adding to 1233420161 its reverse (1610243321), we get a palindrome (2843663482).

The spelling of 1233420161 in words is "one billion, two hundred thirty-three million, four hundred twenty thousand, one hundred sixty-one".