126357220 has 144 divisors (see below), whose sum is σ = 321064128. Its totient is φ = 41368320.

The previous prime is 126357199. The next prime is 126357221. The reversal of 126357220 is 22753621.

It is a super-2 number, since 2×126357220² = 31932294092256800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126357221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2938519 + ... + 2938561.

It is an arithmetic number, because the mean of its divisors is an integer number (2229612).

Almost surely, 2^126357220 is an apocalyptic number.

126357220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126357220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160532064).

126357220 is an abundant number, since it is smaller than the sum of its proper divisors (194706908).

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

126357220 is a wasteful number, since it uses less digits than its factorization.

126357220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 126357220 is about 11240.8727419182. The cubic root of 126357220 is about 501.8031163928.

The spelling of 126357220 in words is "one hundred twenty-six million, three hundred fifty-seven thousand, two hundred twenty".