129125027062 has 16 divisors (see below), whose sum is σ = 196130198880. Its totient is φ = 63751327488.

The previous prime is 129125027041. The next prime is 129125027071. The reversal of 129125027062 is 260720521921.

It is a super-2 number, since 2×129125027062² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672913 + ... + 843244.

It is an arithmetic number, because the mean of its divisors is an integer number (12258137430).

Almost surely, 2^129125027062 is an apocalyptic number.

129125027062 is a deficient number, since it is larger than the sum of its proper divisors (67005171818).

129125027062 is a wasteful number, since it uses less digits than its factorization.

129125027062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516695.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 129125027062 its reverse (260720521921), we get a palindrome (389845548983).

The spelling of 129125027062 in words is "one hundred twenty-nine billion, one hundred twenty-five million, twenty-seven thousand, sixty-two".