126411381 has 32 divisors (see below), whose sum is σ = 196439040. Its totient is φ = 80190000.

The previous prime is 126411359. The next prime is 126411391. The reversal of 126411381 is 183114621.

It is a happy number.

126411381 is a `hidden beast` number, since 1 + 2 + 641 + 13 + 8 + 1 = 666.

It is not a de Polignac number, because 126411381 - 2⁵ = 126411349 is a prime.

It is a super-2 number, since 2×126411381² = 31959674492654322, which contains 22 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 not an unprimeable number, because it can be changed into a prime (126411301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155466 + ... + 156276.

It is an arithmetic number, because the mean of its divisors is an integer number (6138720).

Almost surely, 2^126411381 is an apocalyptic number.

It is an amenable number.

126411381 is a deficient number, since it is larger than the sum of its proper divisors (70027659).

126411381 is a wasteful number, since it uses less digits than its factorization.

126411381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1088 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 126411381 is about 11243.2815939120. The cubic root of 126411381 is about 501.8748027761.

The spelling of 126411381 in words is "one hundred twenty-six million, four hundred eleven thousand, three hundred eighty-one".