126261643 has 8 divisors (see below), whose sum is σ = 130143456. Its totient is φ = 122438400.

The previous prime is 126261637. The next prime is 126261647. The reversal of 126261643 is 346162621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126261643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126261647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10246 + ... + 18907.

It is an arithmetic number, because the mean of its divisors is an integer number (16267932).

Almost surely, 2^126261643 is an apocalyptic number.

126261643 is a deficient number, since it is larger than the sum of its proper divisors (3881813).

126261643 is an equidigital number, since it uses as much as digits as its factorization.

126261643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29285.

The product of its digits is 10368, while the sum is 31.

The square root of 126261643 is about 11236.6206218774. The cubic root of 126261643 is about 501.6765626585.

The spelling of 126261643 in words is "one hundred twenty-six million, two hundred sixty-one thousand, six hundred forty-three".