126075381 has 4 divisors (see below), whose sum is σ = 168100512. Its totient is φ = 84050252.

The previous prime is 126075379. The next prime is 126075413. The reversal of 126075381 is 183570621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126075381 - 2¹ = 126075379 is a prime.

It is a super-2 number, since 2×126075381² = 31790003388590322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126075331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21012561 + ... + 21012566.

It is an arithmetic number, because the mean of its divisors is an integer number (42025128).

Almost surely, 2^126075381 is an apocalyptic number.

It is an amenable number.

126075381 is a deficient number, since it is larger than the sum of its proper divisors (42025131).

126075381 is an equidigital number, since it uses as much as digits as its factorization.

126075381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42025130.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 126075381 is about 11228.3293948833. The cubic root of 126075381 is about 501.4297490716.

The spelling of 126075381 in words is "one hundred twenty-six million, seventy-five thousand, three hundred eighty-one".