1423561003 has 2 divisors, whose sum is σ = 1423561004. Its totient is φ = 1423561002.

The previous prime is 1423560991. The next prime is 1423561021. The reversal of 1423561003 is 3001653241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423561003 is a prime.

It is not a weakly prime, because it can be changed into another prime (1423561603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711780501 + 711780502.

It is an arithmetic number, because the mean of its divisors is an integer number (711780502).

Almost surely, 2^1423561003 is an apocalyptic number.

1423561003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423561003 is an equidigital number, since it uses as much as digits as its factorization.

1423561003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1423561003 is about 37730.1073812413. The cubic root of 1423561003 is about 1124.9296424806.

The spelling of 1423561003 in words is "one billion, four hundred twenty-three million, five hundred sixty-one thousand, three".