126021411252 has 120 divisors (see below), whose sum is σ = 359709245280. Its totient is φ = 38154853440.

The previous prime is 126021411233. The next prime is 126021411277. The reversal of 126021411252 is 252114120621.

It is a happy number.

126021411252 is a `hidden beast` number, since 1 + 2 + 602 + 1 + 4 + 1 + 1 + 2 + 52 = 666.

126021411252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×126021411252³ (a number of 34 digits) contains 333 as substring.

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

It is a congruent number.

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, 4215574 + ... + 4245362.

It is an arithmetic number, because the mean of its divisors is an integer number (2997577044).

Almost surely, 2^126021411252 is an apocalyptic number.

126021411252 is a gapful number since it is divisible by the number (12) 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 126021411252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179854622640).

126021411252 is an abundant number, since it is smaller than the sum of its proper divisors (233687834028).

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

126021411252 is a wasteful number, since it uses less digits than its factorization.

126021411252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31003 (or 30992 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 126021411252 its reverse (252114120621), we get a palindrome (378135531873).

The spelling of 126021411252 in words is "one hundred twenty-six billion, twenty-one million, four hundred eleven thousand, two hundred fifty-two".