126220842 has 80 divisors (see below), whose sum is σ = 310983552. Its totient is φ = 37946880.

The previous prime is 126220793. The next prime is 126220859. The reversal of 126220842 is 248022621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 343743 + ... + 344109.

Almost surely, 2^126220842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126220842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155491776).

126220842 is an abundant number, since it is smaller than the sum of its proper divisors (184762710).

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

126220842 is a wasteful number, since it uses less digits than its factorization.

126220842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 126220842 is about 11234.8049382266. The cubic root of 126220842 is about 501.6225185055.

The spelling of 126220842 in words is "one hundred twenty-six million, two hundred twenty thousand, eight hundred forty-two".