126122620 has 48 divisors (see below), whose sum is σ = 291328128. Its totient is φ = 45573120.

The previous prime is 126122617. The next prime is 126122621. The reversal of 126122620 is 26221621.

It is a junction number, because it is equal to n+sod(n) for n = 126122591 and 126122600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126122621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060 + ... + 17380.

It is an arithmetic number, because the mean of its divisors is an integer number (6069336).

Almost surely, 2^126122620 is an apocalyptic number.

126122620 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 126122620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145664064).

126122620 is an abundant number, since it is smaller than the sum of its proper divisors (165205508).

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

126122620 is a wasteful number, since it uses less digits than its factorization.

126122620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10390 (or 10388 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 126122620 is about 11230.4327610293. The cubic root of 126122620 is about 501.4923679110.

Subtracting from 126122620 its reverse (26221621), we obtain a palindrome (99900999).

The spelling of 126122620 in words is "one hundred twenty-six million, one hundred twenty-two thousand, six hundred twenty".