126143597889 has 135 divisors (see below), whose sum is σ = 208611681201. Its totient is φ = 75948911280.

The previous prime is 126143597869. The next prime is 126143597953. The reversal of 126143597889 is 988795341621.

The square root of 126143597889 is 355167.

It is a perfect power (a square), and thus also a powerful number.

126143597889 is a `hidden beast` number, since 1 + 2 + 614 + 3 + 5 + 9 + 7 + 8 + 8 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-126143597889 is a prime.

Its product of digits (26127360) is a multiple of the sum of its prime divisors (120).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126143597809) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 1882740234 + ... + 1882740300.

Almost surely, 2^126143597889 is an apocalyptic number.

126143597889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

126143597889 is the 355167-th square number.

126143597889 is the 177584-th centered octagonal number.

It is an amenable number.

126143597889 is a deficient number, since it is larger than the sum of its proper divisors (82468083312).

126143597889 is an frugal number, since it uses more digits than its factorization.

126143597889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 120 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 126143597889 in words is "one hundred twenty-six billion, one hundred forty-three million, five hundred ninety-seven thousand, eight hundred eighty-nine".