126340342735 has 4 divisors (see below), whose sum is σ = 151608411288. Its totient is φ = 101072274184.

The previous prime is 126340342697. The next prime is 126340342741. The reversal of 126340342735 is 537243043621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 537243043621 = 223331 ⋅2405591.

It is a cyclic number.

It is not a de Polignac number, because 126340342735 - 2¹³ = 126340334543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12634034269 + ... + 12634034278.

It is an arithmetic number, because the mean of its divisors is an integer number (37902102822).

Almost surely, 2^126340342735 is an apocalyptic number.

126340342735 is a deficient number, since it is larger than the sum of its proper divisors (25268068553).

126340342735 is an equidigital number, since it uses as much as digits as its factorization.

126340342735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25268068552.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 126340342735 in words is "one hundred twenty-six billion, three hundred forty million, three hundred forty-two thousand, seven hundred thirty-five".