1239434101 has 2 divisors, whose sum is σ = 1239434102. Its totient is φ = 1239434100.

The previous prime is 1239434093. The next prime is 1239434111. The reversal of 1239434101 is 1014349321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1225070001 + 14364100 = 35001^2 + 3790^2 .

It is an emirp because it is prime and its reverse (1014349321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1239434101 - 2³ = 1239434093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1239434101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1239434111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619717050 + 619717051.

It is an arithmetic number, because the mean of its divisors is an integer number (619717051).

Almost surely, 2^1239434101 is an apocalyptic number.

It is an amenable number.

1239434101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1239434101 is an equidigital number, since it uses as much as digits as its factorization.

1239434101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1239434101 is about 35205.5975804985. The cubic root of 1239434101 is about 1074.1736143267.

The spelling of 1239434101 in words is "one billion, two hundred thirty-nine million, four hundred thirty-four thousand, one hundred one".