126264026389 has 4 divisors (see below), whose sum is σ = 126277860556. Its totient is φ = 126250192224.

The previous prime is 126264026351. The next prime is 126264026411. The reversal of 126264026389 is 983620462621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108779253489 + 17484772900 = 329817^2 + 132230^2 .

It is a cyclic number.

It is not a de Polignac number, because 126264026389 - 2¹⁵ = 126263993621 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 (126264024389) 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, 6903384 + ... + 6921649.

It is an arithmetic number, because the mean of its divisors is an integer number (31569465139).

Almost surely, 2^126264026389 is an apocalyptic number.

It is an amenable number.

126264026389 is a deficient number, since it is larger than the sum of its proper divisors (13834167).

126264026389 is an equidigital number, since it uses as much as digits as its factorization.

126264026389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13834166.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 126264026389 in words is "one hundred twenty-six billion, two hundred sixty-four million, twenty-six thousand, three hundred eighty-nine".