1214020139 has 2 divisors, whose sum is σ = 1214020140. Its totient is φ = 1214020138.

The previous prime is 1214020111. The next prime is 1214020147. The reversal of 1214020139 is 9310204121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214020139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214020169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607010069 + 607010070.

It is an arithmetic number, because the mean of its divisors is an integer number (607010070).

Almost surely, 2^1214020139 is an apocalyptic number.

1214020139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214020139 is an equidigital number, since it uses as much as digits as its factorization.

1214020139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1214020139 is about 34842.7917796493. The cubic root of 1214020139 is about 1066.7810614400.

The spelling of 1214020139 in words is "one billion, two hundred fourteen million, twenty thousand, one hundred thirty-nine".