126156101 has 4 divisors (see below), whose sum is σ = 128294400. Its totient is φ = 124017804.

The previous prime is 126156091. The next prime is 126156193. The reversal of 126156101 is 101651621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126156101 - 2²⁶ = 59047237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126155101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069061 + ... + 1069178.

It is an arithmetic number, because the mean of its divisors is an integer number (32073600).

Almost surely, 2^126156101 is an apocalyptic number.

It is an amenable number.

126156101 is a deficient number, since it is larger than the sum of its proper divisors (2138299).

126156101 is an equidigital number, since it uses as much as digits as its factorization.

126156101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138298.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 126156101 is about 11231.9232992395. The cubic root of 126156101 is about 501.5367400214.

The spelling of 126156101 in words is "one hundred twenty-six million, one hundred fifty-six thousand, one hundred one".