126661734 has 24 divisors (see below), whose sum is σ = 283898160. Its totient is φ = 40764528.

The previous prime is 126661721. The next prime is 126661739. The reversal of 126661734 is 437166621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126661739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120802 + ... + 121845.

It is an arithmetic number, because the mean of its divisors is an integer number (11829090).

Almost surely, 2^126661734 is an apocalyptic number.

126661734 is an abundant number, since it is smaller than the sum of its proper divisors (157236426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126661734 is a wasteful number, since it uses less digits than its factorization.

126661734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242684 (or 242681 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 126661734 is about 11254.4095358219. The cubic root of 126661734 is about 502.2058990403.

It can be divided in two parts, 12666 and 1734, that added together give a square (14400 = 120²).

The spelling of 126661734 in words is "one hundred twenty-six million, six hundred sixty-one thousand, seven hundred thirty-four".