126403655 has 16 divisors (see below), whose sum is σ = 178040640. Its totient is φ = 84333312.

The previous prime is 126403639. The next prime is 126403657. The reversal of 126403655 is 556304621.

It is not a de Polignac number, because 126403655 - 2⁴ = 126403639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126403657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47510 + ... + 50099.

It is an arithmetic number, because the mean of its divisors is an integer number (11127540).

Almost surely, 2^126403655 is an apocalyptic number.

126403655 is a deficient number, since it is larger than the sum of its proper divisors (51636985).

126403655 is an equidigital number, since it uses as much as digits as its factorization.

126403655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97658.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 126403655 is about 11242.9380056994. The cubic root of 126403655 is about 501.8645780540.

The spelling of 126403655 in words is "one hundred twenty-six million, four hundred three thousand, six hundred fifty-five".