402430451 has 2 divisors, whose sum is σ = 402430452. Its totient is φ = 402430450.

The previous prime is 402430447. The next prime is 402430453. The reversal of 402430451 is 154034204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402430451 - 2² = 402430447 is a prime.

Together with 402430453, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402430453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201215225 + 201215226.

It is an arithmetic number, because the mean of its divisors is an integer number (201215226).

Almost surely, 2^402430451 is an apocalyptic number.

402430451 is a deficient number, since it is larger than the sum of its proper divisors (1).

402430451 is an equidigital number, since it uses as much as digits as its factorization.

402430451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402430451 is about 20060.6692560343. The cubic root of 402430451 is about 738.2955970751.

Adding to 402430451 its reverse (154034204), we get a palindrome (556464655).

The spelling of 402430451 in words is "four hundred two million, four hundred thirty thousand, four hundred fifty-one".