126342897909 has 8 divisors (see below), whose sum is σ = 169128342432. Its totient is φ = 83893026000.

The previous prime is 126342897869. The next prime is 126342897911. The reversal of 126342897909 is 909798243621.

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

It is not a de Polignac number, because 126342897909 - 2²⁷ = 126208680181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126342897949) 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, 83892274 + ... + 83893779.

It is an arithmetic number, because the mean of its divisors is an integer number (21141042804).

Almost surely, 2^126342897909 is an apocalyptic number.

It is an amenable number.

126342897909 is a deficient number, since it is larger than the sum of its proper divisors (42785444523).

126342897909 is a wasteful number, since it uses less digits than its factorization.

126342897909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167786307.

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 126342897909 in words is "one hundred twenty-six billion, three hundred forty-two million, eight hundred ninety-seven thousand, nine hundred nine".