126106421 has 8 divisors (see below), whose sum is σ = 144303744. Its totient is φ = 107954640.

The previous prime is 126106399. The next prime is 126106427. The reversal of 126106421 is 124601621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126106421 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 (126106427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5225 + ... + 16718.

It is an arithmetic number, because the mean of its divisors is an integer number (18037968).

Almost surely, 2^126106421 is an apocalyptic number.

It is an amenable number.

126106421 is a deficient number, since it is larger than the sum of its proper divisors (18197323).

126106421 is an equidigital number, since it uses as much as digits as its factorization.

126106421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22771.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 126106421 is about 11229.7115279067. The cubic root of 126106421 is about 501.4708966828.

The spelling of 126106421 in words is "one hundred twenty-six million, one hundred six thousand, four hundred twenty-one".