126156061 has 4 divisors (see below), whose sum is σ = 130506300. Its totient is φ = 121805824.

The previous prime is 126156047. The next prime is 126156077. The reversal of 126156061 is 160651621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89019225 + 37136836 = 9435^2 + 6094^2 .

It is a cyclic number.

It is not a de Polignac number, because 126156061 - 2¹⁵ = 126123293 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 (126156091) 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, 2175076 + ... + 2175133.

It is an arithmetic number, because the mean of its divisors is an integer number (32626575).

Almost surely, 2^126156061 is an apocalyptic number.

It is an amenable number.

126156061 is a deficient number, since it is larger than the sum of its proper divisors (4350239).

126156061 is an equidigital number, since it uses as much as digits as its factorization.

126156061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350238.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 126156061 is about 11231.9215186005. The cubic root of 126156061 is about 501.5366870144.

It can be divided in two parts, 1261560 and 61, that added together give a palindrome (1261621).

The spelling of 126156061 in words is "one hundred twenty-six million, one hundred fifty-six thousand, sixty-one".