42486691129 has 3 divisors (see below), whose sum is σ = 42486897253. Its totient is φ = 42486485006.

The previous prime is 42486691073. The next prime is 42486691139. The reversal of 42486691129 is 92119668424.

The square root of 42486691129 is 206123.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 42486691129 - 2⁷ = 42486691001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42486691139) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103062 + ... + 309184.

Almost surely, 2^42486691129 is an apocalyptic number.

42486691129 is the 206123-rd square number.

42486691129 is the 103062-nd centered octagonal number.

It is an amenable number.

42486691129 is a deficient number, since it is larger than the sum of its proper divisors (206124).

42486691129 is an frugal number, since it uses more digits than its factorization.

42486691129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412246 (or 206123 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The spelling of 42486691129 in words is "forty-two billion, four hundred eighty-six million, six hundred ninety-one thousand, one hundred twenty-nine".