126142229 has 4 divisors (see below), whose sum is σ = 126977760. Its totient is φ = 125306700.

The previous prime is 126142217. The next prime is 126142243. The reversal of 126142229 is 922241621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 922241621 = 7 ⋅131748803.

It is a cyclic number.

It is not a de Polignac number, because 126142229 - 2⁸ = 126141973 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 (126142529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417539 + ... + 417840.

It is an arithmetic number, because the mean of its divisors is an integer number (31744440).

Almost surely, 2^126142229 is an apocalyptic number.

It is an amenable number.

126142229 is a deficient number, since it is larger than the sum of its proper divisors (835531).

126142229 is an equidigital number, since it uses as much as digits as its factorization.

126142229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835530.

The product of its digits is 3456, while the sum is 29.

The square root of 126142229 is about 11231.3057566785. The cubic root of 126142229 is about 501.5183565197.

The spelling of 126142229 in words is "one hundred twenty-six million, one hundred forty-two thousand, two hundred twenty-nine".