401230451 has 2 divisors, whose sum is σ = 401230452. Its totient is φ = 401230450.

The previous prime is 401230421. The next prime is 401230471. The reversal of 401230451 is 154032104.

It is an a-pointer prime, because the next prime (401230471) can be obtained adding 401230451 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401230451 is a prime.

It is not a weakly prime, because it can be changed into another prime (401230421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200615225 + 200615226.

It is an arithmetic number, because the mean of its divisors is an integer number (200615226).

Almost surely, 2^401230451 is an apocalyptic number.

401230451 is a deficient number, since it is larger than the sum of its proper divisors (1).

401230451 is an equidigital number, since it uses as much as digits as its factorization.

401230451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401230451 is about 20030.7376549143. The cubic root of 401230451 is about 737.5610297479.

Adding to 401230451 its reverse (154032104), we get a palindrome (555262555).

The spelling of 401230451 in words is "four hundred one million, two hundred thirty thousand, four hundred fifty-one".