126786155 has 4 divisors (see below), whose sum is σ = 152143392. Its totient is φ = 101428920.

The previous prime is 126786133. The next prime is 126786197. The reversal of 126786155 is 551687621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551687621 = 17 ⋅32452213.

It is not a de Polignac number, because 126786155 - 2⁶ = 126786091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12678611 + ... + 12678620.

It is an arithmetic number, because the mean of its divisors is an integer number (38035848).

Almost surely, 2^126786155 is an apocalyptic number.

126786155 is a deficient number, since it is larger than the sum of its proper divisors (25357237).

126786155 is an equidigital number, since it uses as much as digits as its factorization.

126786155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25357236.

The product of its digits is 100800, while the sum is 41.

The square root of 126786155 is about 11259.9358346307. The cubic root of 126786155 is about 502.3702857352.

The spelling of 126786155 in words is "one hundred twenty-six million, seven hundred eighty-six thousand, one hundred fifty-five".