29142245521 has 3 divisors (see below), whose sum is σ = 29142416233. Its totient is φ = 29142074810.

The previous prime is 29142245513. The next prime is 29142245549. The reversal of 29142245521 is 12554224192.

The square root of 29142245521 is 170711.

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 29142245521 - 2³ = 29142245513 is a prime.

It is a super-2 number, since 2×29142245521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29142245501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 85356 + ... + 256066.

Almost surely, 2^29142245521 is an apocalyptic number.

29142245521 is the 170711-st square number.

29142245521 is the 85356-th centered octagonal number.

It is an amenable number.

29142245521 is a deficient number, since it is larger than the sum of its proper divisors (170712).

29142245521 is an frugal number, since it uses more digits than its factorization.

29142245521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341422 (or 170711 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The spelling of 29142245521 in words is "twenty-nine billion, one hundred forty-two million, two hundred forty-five thousand, five hundred twenty-one".