20070139 has 2 divisors, whose sum is σ = 20070140. Its totient is φ = 20070138.

The previous prime is 20070107. The next prime is 20070143. The reversal of 20070139 is 93107002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20070139 - 2⁵ = 20070107 is a prime.

It is equal to p_1274800 and since 20070139 and 1274800 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20070179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10035069 + 10035070.

It is an arithmetic number, because the mean of its divisors is an integer number (10035070).

Almost surely, 2^20070139 is an apocalyptic number.

20070139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20070139 is an equidigital number, since it uses as much as digits as its factorization.

20070139 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 22.

The square root of 20070139 is about 4479.9708704410. The cubic root of 20070139 is about 271.7587023447.

The spelling of 20070139 in words is "twenty million, seventy thousand, one hundred thirty-nine".