1420409387 has 2 divisors, whose sum is σ = 1420409388. Its totient is φ = 1420409386.

The previous prime is 1420409329. The next prime is 1420409437. The reversal of 1420409387 is 7839040241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420409387 - 2⁶ = 1420409323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420409387.

It is not a weakly prime, because it can be changed into another prime (1420409327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710204693 + 710204694.

It is an arithmetic number, because the mean of its divisors is an integer number (710204694).

Almost surely, 2^1420409387 is an apocalyptic number.

1420409387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420409387 is an equidigital number, since it uses as much as digits as its factorization.

1420409387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1420409387 is about 37688.3189728595. The cubic root of 1420409387 is about 1124.0988700215.

The spelling of 1420409387 in words is "one billion, four hundred twenty million, four hundred nine thousand, three hundred eighty-seven".