511020126 has 48 divisors (see below), whose sum is σ = 1122277104. Its totient is φ = 168037632.

The previous prime is 511020121. The next prime is 511020149. The reversal of 511020126 is 621020115.

It is a super-2 number, since 2×511020126² = 522283138354111752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 511020099 and 511020108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562965 + ... + 563871.

It is an arithmetic number, because the mean of its divisors is an integer number (23380773).

Almost surely, 2^511020126 is an apocalyptic number.

511020126 is an abundant number, since it is smaller than the sum of its proper divisors (611256978).

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

511020126 is a wasteful number, since it uses less digits than its factorization.

511020126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 511020126 is about 22605.7542674426. The cubic root of 511020126 is about 799.4893230390.

The spelling of 511020126 in words is "five hundred eleven million, twenty thousand, one hundred twenty-six".