1290078103 has 2 divisors, whose sum is σ = 1290078104. Its totient is φ = 1290078102.

The previous prime is 1290078091. The next prime is 1290078107. The reversal of 1290078103 is 3018700921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1290078103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290078107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645039051 + 645039052.

It is an arithmetic number, because the mean of its divisors is an integer number (645039052).

Almost surely, 2^1290078103 is an apocalyptic number.

1290078103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290078103 is an equidigital number, since it uses as much as digits as its factorization.

1290078103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1290078103 is about 35917.6572593481. The cubic root of 1290078103 is about 1088.6092025002.

The spelling of 1290078103 in words is "one billion, two hundred ninety million, seventy-eight thousand, one hundred three".