126067421 has 4 divisors (see below), whose sum is σ = 130134144. Its totient is φ = 122000700.

The previous prime is 126067391. The next prime is 126067453. The reversal of 126067421 is 124760621.

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: 124760621 = 947 ⋅131743.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126067421 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 (126067471) 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, 2033315 + ... + 2033376.

It is an arithmetic number, because the mean of its divisors is an integer number (32533536).

Almost surely, 2^126067421 is an apocalyptic number.

It is an amenable number.

126067421 is a deficient number, since it is larger than the sum of its proper divisors (4066723).

126067421 is an equidigital number, since it uses as much as digits as its factorization.

126067421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066722.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 126067421 is about 11227.9749287216. The cubic root of 126067421 is about 501.4191959544.

The spelling of 126067421 in words is "one hundred twenty-six million, sixty-seven thousand, four hundred twenty-one".