126286421 has 8 divisors (see below), whose sum is σ = 133992000. Its totient is φ = 118611648.

The previous prime is 126286417. The next prime is 126286441. The reversal of 126286421 is 124682621.

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

It is a cyclic number.

It is not a de Polignac number, because 126286421 - 2² = 126286417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126286441) 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, 1040 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (16749000).

Almost surely, 2^126286421 is an apocalyptic number.

It is an amenable number.

126286421 is a deficient number, since it is larger than the sum of its proper divisors (7705579).

126286421 is a wasteful number, since it uses less digits than its factorization.

126286421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15403.

The product of its digits is 9216, while the sum is 32.

The square root of 126286421 is about 11237.7231234801. The cubic root of 126286421 is about 501.7093773982.

The spelling of 126286421 in words is "one hundred twenty-six million, two hundred eighty-six thousand, four hundred twenty-one".