126840262265 has 8 divisors (see below), whose sum is σ = 152333802888. Its totient is φ = 101388551040.

The previous prime is 126840262231. The next prime is 126840262277. The reversal of 126840262265 is 562262048621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5415193744 + 121425068521 = 73588^2 + 348461^2 .

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

It is not a de Polignac number, because 126840262265 - 2²² = 126836067961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10450676 + ... + 10462805.

It is an arithmetic number, because the mean of its divisors is an integer number (19041725361).

Almost surely, 2^126840262265 is an apocalyptic number.

It is an amenable number.

126840262265 is a deficient number, since it is larger than the sum of its proper divisors (25493540623).

126840262265 is a wasteful number, since it uses less digits than its factorization.

126840262265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914699.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 126840262265 in words is "one hundred twenty-six billion, eight hundred forty million, two hundred sixty-two thousand, two hundred sixty-five".