126155101 has 2 divisors, whose sum is σ = 126155102. Its totient is φ = 126155100.

The previous prime is 126155059. The next prime is 126155111. The reversal of 126155101 is 101551621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104755225 + 21399876 = 10235^2 + 4626^2 .

It is an emirp because it is prime and its reverse (101551621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126155101 - 2¹⁷ = 126024029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126155111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63077550 + 63077551.

It is an arithmetic number, because the mean of its divisors is an integer number (63077551).

Almost surely, 2^126155101 is an apocalyptic number.

It is an amenable number.

126155101 is a deficient number, since it is larger than the sum of its proper divisors (1).

126155101 is an equidigital number, since it uses as much as digits as its factorization.

126155101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 126155101 is about 11231.8787831778. The cubic root of 126155101 is about 501.5354148429.

The spelling of 126155101 in words is "one hundred twenty-six million, one hundred fifty-five thousand, one hundred one".