158040101 has 2 divisors, whose sum is σ = 158040102. Its totient is φ = 158040100.

The previous prime is 158040097. The next prime is 158040121. The reversal of 158040101 is 101040851.

It is an a-pointer prime, because the next prime (158040121) can be obtained adding 158040101 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154977601 + 3062500 = 12449^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 158040101 - 2² = 158040097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158040121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79020050 + 79020051.

It is an arithmetic number, because the mean of its divisors is an integer number (79020051).

Almost surely, 2^158040101 is an apocalyptic number.

It is an amenable number.

158040101 is a deficient number, since it is larger than the sum of its proper divisors (1).

158040101 is an equidigital number, since it uses as much as digits as its factorization.

158040101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 158040101 is about 12571.4001209094. The cubic root of 158040101 is about 540.6577501672.

Adding to 158040101 its reverse (101040851), we get a palindrome (259080952).

The spelling of 158040101 in words is "one hundred fifty-eight million, forty thousand, one hundred one".