4012126920 has 48 divisors (see below), whose sum is σ = 13039413660. Its totient is φ = 1069900416.

The previous prime is 4012126903. The next prime is 4012126991. The reversal of 4012126920 is 296212104.

It can be written as a sum of positive squares in 2 ways, for example, as 3725637444 + 286489476 = 61038^2 + 16926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5572039 + ... + 5572758.

Almost surely, 2^4012126920 is an apocalyptic number.

4012126920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4012126920 is an abundant number, since it is smaller than the sum of its proper divisors (9027286740).

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

4012126920 is a wasteful number, since it uses less digits than its factorization.

4012126920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11144814 (or 11144807 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4012126920 is about 63341.3523695224. The cubic root of 4012126920 is about 1589.0036239995.

The spelling of 4012126920 in words is "four billion, twelve million, one hundred twenty-six thousand, nine hundred twenty".