126686051 has 4 divisors (see below), whose sum is σ = 127062312. Its totient is φ = 126309792.

The previous prime is 126686029. The next prime is 126686069. The reversal of 126686051 is 150686621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150686621 = 1429 ⋅105449.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126686051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126686011) 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, 187625 + ... + 188298.

It is an arithmetic number, because the mean of its divisors is an integer number (31765578).

Almost surely, 2^126686051 is an apocalyptic number.

126686051 is a deficient number, since it is larger than the sum of its proper divisors (376261).

126686051 is an equidigital number, since it uses as much as digits as its factorization.

126686051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376260.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 126686051 is about 11255.4898160853. The cubic root of 126686051 is about 502.2380354482.

The spelling of 126686051 in words is "one hundred twenty-six million, six hundred eighty-six thousand, fifty-one".