126265012639 has 8 divisors (see below), whose sum is σ = 132913923840. Its totient is φ = 119616439896.

The previous prime is 126265012631. The next prime is 126265012667. The reversal of 126265012639 is 936210562621.

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

It is a cyclic number.

It is not a de Polignac number, because 126265012639 - 2³ = 126265012631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126265012595 and 126265012604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126265012631) 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, 1123752 + ... + 1230994.

It is an arithmetic number, because the mean of its divisors is an integer number (16614240480).

Almost surely, 2^126265012639 is an apocalyptic number.

126265012639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

126265012639 is a deficient number, since it is larger than the sum of its proper divisors (6648911201).

126265012639 is a wasteful number, since it uses less digits than its factorization.

126265012639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169229.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 126265012639 in words is "one hundred twenty-six billion, two hundred sixty-five million, twelve thousand, six hundred thirty-nine".