1428000139 has 2 divisors, whose sum is σ = 1428000140. Its totient is φ = 1428000138.

The previous prime is 1428000127. The next prime is 1428000227. The reversal of 1428000139 is 9310008241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428000139 - 2¹³ = 1427991947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428004139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714000069 + 714000070.

It is an arithmetic number, because the mean of its divisors is an integer number (714000070).

Almost surely, 2^1428000139 is an apocalyptic number.

1428000139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428000139 is an equidigital number, since it uses as much as digits as its factorization.

1428000139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1428000139 is about 37788.8890945474. The cubic root of 1428000139 is about 1126.0977305706.

The spelling of 1428000139 in words is "one billion, four hundred twenty-eight million, one hundred thirty-nine", and thus it is an aban number.