126139213789 has 8 divisors (see below), whose sum is σ = 131916686400. Its totient is φ = 120386171136.

The previous prime is 126139213787. The next prime is 126139213859. The reversal of 126139213789 is 987312931621.

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 126139213789 - 2¹ = 126139213787 is a prime.

It is a super-2 number, since 2×126139213789² (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 (126139213787) 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, 6096927 + ... + 6117580.

It is an arithmetic number, because the mean of its divisors is an integer number (16489585800).

Almost surely, 2^126139213789 is an apocalyptic number.

It is an amenable number.

126139213789 is a deficient number, since it is larger than the sum of its proper divisors (5777472611).

126139213789 is a wasteful number, since it uses less digits than its factorization.

126139213789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214979.

The product of its digits is 979776, while the sum is 52.

The spelling of 126139213789 in words is "one hundred twenty-six billion, one hundred thirty-nine million, two hundred thirteen thousand, seven hundred eighty-nine".