126036421 has 8 divisors (see below), whose sum is σ = 148688384. Its totient is φ = 104546160.

The previous prime is 126036377. The next prime is 126036433. The reversal of 126036421 is 124630621.

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 126036421 - 2⁷ = 126036293 is a prime.

It is a super-3 number, since 3×126036421³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126036121) 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 7 ways as a sum of consecutive naturals, for example, 290190 + ... + 290623.

It is an arithmetic number, because the mean of its divisors is an integer number (18586048).

Almost surely, 2^126036421 is an apocalyptic number.

It is an amenable number.

126036421 is a deficient number, since it is larger than the sum of its proper divisors (22651963).

126036421 is an equidigital number, since it uses as much as digits as its factorization.

126036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580851.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 126036421 is about 11226.5943633855. The cubic root of 126036421 is about 501.3780928970.

The spelling of 126036421 in words is "one hundred twenty-six million, thirty-six thousand, four hundred twenty-one".