126155530 has 16 divisors (see below), whose sum is σ = 227593800. Its totient is φ = 50348032.

The previous prime is 126155509. The next prime is 126155543. The reversal of 126155530 is 35551621.

It can be written as a sum of positive squares in 4 ways, for example, as 63856081 + 62299449 = 7991^2 + 7893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9559 + ... + 18538.

Almost surely, 2^126155530 is an apocalyptic number.

126155530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126155530 is a deficient number, since it is larger than the sum of its proper divisors (101438270).

126155530 is a wasteful number, since it uses less digits than its factorization.

126155530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28553.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 126155530 is about 11231.8978805899. The cubic root of 126155530 is about 501.5359833453.

It can be divided in two parts, 12615 and 5530, that added together give a triangular number (18145 = T₁₉₀).

The spelling of 126155530 in words is "one hundred twenty-six million, one hundred fifty-five thousand, five hundred thirty".