126183832421 has 4 divisors (see below), whose sum is σ = 126188407500. Its totient is φ = 126179257344.

The previous prime is 126183832399. The next prime is 126183832429. The reversal of 126183832421 is 124238381621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124238381621 = 191 ⋅650462731.

It can be written as a sum of positive squares in 2 ways, for example, as 67384372225 + 58799460196 = 259585^2 + 242486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126183832421 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 (126183832429) 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 3 ways as a sum of consecutive naturals, for example, 2245916 + ... + 2301413.

It is an arithmetic number, because the mean of its divisors is an integer number (31547101875).

Almost surely, 2^126183832421 is an apocalyptic number.

It is an amenable number.

126183832421 is a deficient number, since it is larger than the sum of its proper divisors (4575079).

126183832421 is an equidigital number, since it uses as much as digits as its factorization.

126183832421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575078.

The product of its digits is 110592, while the sum is 41.

The spelling of 126183832421 in words is "one hundred twenty-six billion, one hundred eighty-three million, eight hundred thirty-two thousand, four hundred twenty-one".