84421003 has 2 divisors, whose sum is σ = 84421004. Its totient is φ = 84421002.

The previous prime is 84420989. The next prime is 84421021. The reversal of 84421003 is 30012448.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84421003 is a prime.

It is not a weakly prime, because it can be changed into another prime (84421703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42210501 + 42210502.

It is an arithmetic number, because the mean of its divisors is an integer number (42210502).

Almost surely, 2^84421003 is an apocalyptic number.

84421003 is a deficient number, since it is larger than the sum of its proper divisors (1).

84421003 is an equidigital number, since it uses as much as digits as its factorization.

84421003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 84421003 is about 9188.0902803575. The cubic root of 84421003 is about 438.6823580053.

The spelling of 84421003 in words is "eighty-four million, four hundred twenty-one thousand, three".