126505434 has 16 divisors (see below), whose sum is σ = 276012000. Its totient is φ = 38334960.

The previous prime is 126505411. The next prime is 126505469. The reversal of 126505434 is 434505621.

It is a Curzon number.

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, 958309 + ... + 958440.

It is an arithmetic number, because the mean of its divisors is an integer number (17250750).

Almost surely, 2^126505434 is an apocalyptic number.

126505434 is an abundant number, since it is smaller than the sum of its proper divisors (149506566).

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

126505434 is a wasteful number, since it uses less digits than its factorization.

126505434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916765.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 126505434 is about 11247.4634473734. The cubic root of 126505434 is about 501.9992407516. Note that the first 3 decimals are identical.

The spelling of 126505434 in words is "one hundred twenty-six million, five hundred five thousand, four hundred thirty-four".