4231421947 has 2 divisors, whose sum is σ = 4231421948. Its totient is φ = 4231421946.

The previous prime is 4231421927. The next prime is 4231421977. The reversal of 4231421947 is 7491241324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4231421947 - 2⁷ = 4231421819 is a prime.

It is not a weakly prime, because it can be changed into another prime (4231421927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115710973 + 2115710974.

It is an arithmetic number, because the mean of its divisors is an integer number (2115710974).

Almost surely, 2^4231421947 is an apocalyptic number.

4231421947 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231421947 is an equidigital number, since it uses as much as digits as its factorization.

4231421947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 4231421947 is about 65049.3808348704. The cubic root of 4231421947 is about 1617.4422304417.

It can be divided in two parts, 42314 and 21947, that added together give a triangular number (64261 = T₃₅₈).

The spelling of 4231421947 in words is "four billion, two hundred thirty-one million, four hundred twenty-one thousand, nine hundred forty-seven".