1056126261 has 8 divisors (see below), whose sum is σ = 1446227104. Its totient is φ = 685054800.

The previous prime is 1056126223. The next prime is 1056126271. The reversal of 1056126261 is 1626216501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1056126261 - 2⁷ = 1056126133 is a prime.

It is a super-2 number, since 2×1056126261² = 2230805358347680242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056126221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4757215 + ... + 4757436.

It is an arithmetic number, because the mean of its divisors is an integer number (180778388).

Almost surely, 2^1056126261 is an apocalyptic number.

It is an amenable number.

1056126261 is a deficient number, since it is larger than the sum of its proper divisors (390100843).

1056126261 is an equidigital number, since it uses as much as digits as its factorization.

1056126261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9514691.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1056126261 is about 32498.0962673200. The cubic root of 1056126261 is about 1018.3692579195.

The spelling of 1056126261 in words is "one billion, fifty-six million, one hundred twenty-six thousand, two hundred sixty-one".