126428421 has 8 divisors (see below), whose sum is σ = 192652864. Its totient is φ = 72244800.

The previous prime is 126428411. The next prime is 126428431. The reversal of 126428421 is 124824621.

It is an interprime number because it is at equal distance from previous prime (126428411) and next prime (126428431).

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

It is not a de Polignac number, because 126428421 - 2⁵ = 126428389 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 (126428411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3010180 + ... + 3010221.

It is an arithmetic number, because the mean of its divisors is an integer number (24081608).

Almost surely, 2^126428421 is an apocalyptic number.

It is an amenable number.

126428421 is a deficient number, since it is larger than the sum of its proper divisors (66224443).

126428421 is an equidigital number, since it uses as much as digits as its factorization.

126428421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6020411.

The product of its digits is 6144, while the sum is 30.

The square root of 126428421 is about 11244.0393542534. The cubic root of 126428421 is about 501.8973523344.

The spelling of 126428421 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, four hundred twenty-one".