1376003 has 2 divisors, whose sum is σ = 1376004. Its totient is φ = 1376002.

The previous prime is 1375987. The next prime is 1376009. The reversal of 1376003 is 3006731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1376003 - 2⁴ = 1375987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1376009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688001 + 688002.

It is an arithmetic number, because the mean of its divisors is an integer number (688002).

2^1376003 is an apocalyptic number.

1376003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376003 is an equidigital number, since it uses as much as digits as its factorization.

1376003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 1376003 is about 1173.0315426279. The cubic root of 1376003 is about 111.2260361632.

The spelling of 1376003 in words is "one million, three hundred seventy-six thousand, three".