126024463021 has 4 divisors (see below), whose sum is σ = 128402283132. Its totient is φ = 123646642912.

The previous prime is 126024462997. The next prime is 126024463039. The reversal of 126024463021 is 120364420621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120364420621 = 63361 ⋅1899661.

It can be written as a sum of positive squares in 2 ways, for example, as 103626048100 + 22398414921 = 321910^2 + 149661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126024463021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126024263021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188909976 + ... + 1188910081.

It is an arithmetic number, because the mean of its divisors is an integer number (32100570783).

Almost surely, 2^126024463021 is an apocalyptic number.

It is an amenable number.

126024463021 is a deficient number, since it is larger than the sum of its proper divisors (2377820111).

126024463021 is an equidigital number, since it uses as much as digits as its factorization.

126024463021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377820110.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 126024463021 its reverse (120364420621), we get a palindrome (246388883642).

The spelling of 126024463021 in words is "one hundred twenty-six billion, twenty-four million, four hundred sixty-three thousand, twenty-one".