126875381 has 2 divisors, whose sum is σ = 126875382. Its totient is φ = 126875380.

The previous prime is 126875363. The next prime is 126875393. The reversal of 126875381 is 183578621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69872881 + 57002500 = 8359^2 + 7550^2 .

It is a cyclic number.

It is not a de Polignac number, because 126875381 - 2⁶ = 126875317 is a prime.

It is a super-2 number, since 2×126875381² = 32194724607790322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126875081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63437690 + 63437691.

It is an arithmetic number, because the mean of its divisors is an integer number (63437691).

Almost surely, 2^126875381 is an apocalyptic number.

It is an amenable number.

126875381 is a deficient number, since it is larger than the sum of its proper divisors (1).

126875381 is an equidigital number, since it uses as much as digits as its factorization.

126875381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 126875381 is about 11263.8972385227. The cubic root of 126875381 is about 502.4881061185.

The spelling of 126875381 in words is "one hundred twenty-six million, eight hundred seventy-five thousand, three hundred eighty-one".