126021225 has 24 divisors (see below), whose sum is σ = 227297952. Its totient is φ = 61100800.

The previous prime is 126021199. The next prime is 126021239. The reversal of 126021225 is 522120621.

It is a happy number.

It is not a de Polignac number, because 126021225 - 2⁸ = 126020969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75552 + ... + 77201.

It is an arithmetic number, because the mean of its divisors is an integer number (9470748).

Almost surely, 2^126021225 is an apocalyptic number.

126021225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126021225 is a deficient number, since it is larger than the sum of its proper divisors (101276727).

126021225 is a wasteful number, since it uses less digits than its factorization.

126021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152777 (or 152772 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 126021225 is about 11225.9175571532. The cubic root of 126021225 is about 501.3579419817.

Adding to 126021225 its reverse (522120621), we get a palindrome (648141846).

The spelling of 126021225 in words is "one hundred twenty-six million, twenty-one thousand, two hundred twenty-five".