1232440427 has 2 divisors, whose sum is σ = 1232440428. Its totient is φ = 1232440426.

The previous prime is 1232440421. The next prime is 1232440477. The reversal of 1232440427 is 7240442321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1232440427 - 2⁸ = 1232440171 is a prime.

It is a super-2 number, since 2×1232440427² = 3037818812207884658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1232440427.

It is not a weakly prime, because it can be changed into another prime (1232440421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616220213 + 616220214.

It is an arithmetic number, because the mean of its divisors is an integer number (616220214).

Almost surely, 2^1232440427 is an apocalyptic number.

1232440427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232440427 is an equidigital number, since it uses as much as digits as its factorization.

1232440427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 1232440427 is about 35106.1309033052. The cubic root of 1232440427 is about 1072.1494124534.

Adding to 1232440427 its reverse (7240442321), we get a palindrome (8472882748).

The spelling of 1232440427 in words is "one billion, two hundred thirty-two million, four hundred forty thousand, four hundred twenty-seven".