126940787 has 4 divisors (see below), whose sum is σ = 127472160. Its totient is φ = 126409416.

The previous prime is 126940783. The next prime is 126940799. The reversal of 126940787 is 787049621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787049621 = 2731 ⋅288191.

It is a cyclic number.

It is not a de Polignac number, because 126940787 - 2² = 126940783 is a prime.

It is a super-2 number, since 2×126940787² = 32227926808358738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126940783) 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, 265328 + ... + 265805.

It is an arithmetic number, because the mean of its divisors is an integer number (31868040).

Almost surely, 2^126940787 is an apocalyptic number.

126940787 is a deficient number, since it is larger than the sum of its proper divisors (531373).

126940787 is an equidigital number, since it uses as much as digits as its factorization.

126940787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531372.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 126940787 is about 11266.8002112401. The cubic root of 126940787 is about 502.5744377899.

The spelling of 126940787 in words is "one hundred twenty-six million, nine hundred forty thousand, seven hundred eighty-seven".