126940206423 has 8 divisors (see below), whose sum is σ = 169255666288. Its totient is φ = 84625775424.

The previous prime is 126940206373. The next prime is 126940206493. The reversal of 126940206423 is 324602049621.

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

It is not a de Polignac number, because 126940206423 - 2¹⁷ = 126940075351 is a prime.

It is a super-2 number, since 2×126940206423² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126940206493) 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, 102561 + ... + 514197.

It is an arithmetic number, because the mean of its divisors is an integer number (21156958286).

Almost surely, 2^126940206423 is an apocalyptic number.

126940206423 is a deficient number, since it is larger than the sum of its proper divisors (42315459865).

126940206423 is a wasteful number, since it uses less digits than its factorization.

126940206423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514433.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 126940206423 in words is "one hundred twenty-six billion, nine hundred forty million, two hundred six thousand, four hundred twenty-three".