1302400387 has 2 divisors, whose sum is σ = 1302400388. Its totient is φ = 1302400386.

The previous prime is 1302400339. The next prime is 1302400403. The reversal of 1302400387 is 7830042031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302400387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1302400487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651200193 + 651200194.

It is an arithmetic number, because the mean of its divisors is an integer number (651200194).

Almost surely, 2^1302400387 is an apocalyptic number.

1302400387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302400387 is an equidigital number, since it uses as much as digits as its factorization.

1302400387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1302400387 is about 36088.7847814248. The cubic root of 1302400387 is about 1092.0642047322.

The spelling of 1302400387 in words is "one billion, three hundred two million, four hundred thousand, three hundred eighty-seven".