126421896 has 128 divisors (see below), whose sum is σ = 350208000. Its totient is φ = 37884672.

The previous prime is 126421879. The next prime is 126421913. The reversal of 126421896 is 698124621.

It is an interprime number because it is at equal distance from previous prime (126421879) and next prime (126421913).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 995385 + ... + 995511.

It is an arithmetic number, because the mean of its divisors is an integer number (2736000).

Almost surely, 2^126421896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126421896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175104000).

126421896 is an abundant number, since it is smaller than the sum of its proper divisors (223786104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126421896 is a wasteful number, since it uses less digits than its factorization.

126421896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 126421896 is about 11243.7491967760. The cubic root of 126421896 is about 501.8887178398. Note that the first 3 decimals are identical.

The spelling of 126421896 in words is "one hundred twenty-six million, four hundred twenty-one thousand, eight hundred ninety-six".