126668074031 has 4 divisors (see below), whose sum is σ = 128814990600. Its totient is φ = 124521157464.

The previous prime is 126668074019. The next prime is 126668074103. The reversal of 126668074031 is 130470866621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130470866621 = 269 ⋅485021809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126668074031 is a prime.

It is a super-2 number, since 2×126668074031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126668074331) 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, 1073458196 + ... + 1073458313.

It is an arithmetic number, because the mean of its divisors is an integer number (32203747650).

Almost surely, 2^126668074031 is an apocalyptic number.

126668074031 is a deficient number, since it is larger than the sum of its proper divisors (2146916569).

126668074031 is an equidigital number, since it uses as much as digits as its factorization.

126668074031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146916568.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 126668074031 in words is "one hundred twenty-six billion, six hundred sixty-eight million, seventy-four thousand, thirty-one".