42261902929 has 9 divisors (see below), whose sum is σ = 42551049801. Its totient is φ = 41974711860.

The previous prime is 42261902873. The next prime is 42261902951. The reversal of 42261902929 is 92920916224.

The square root of 42261902929 is 205577.

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

It is not a de Polignac number, because 42261902929 - 2¹¹ = 42261900881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42261902959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34330744 + ... + 34331974.

Almost surely, 2^42261902929 is an apocalyptic number.

42261902929 is the 205577-th square number.

42261902929 is the 102789-th centered octagonal number.

It is an amenable number.

42261902929 is a deficient number, since it is larger than the sum of its proper divisors (289146872).

42261902929 is an frugal number, since it uses more digits than its factorization.

42261902929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 42261902929 in words is "forty-two billion, two hundred sixty-one million, nine hundred two thousand, nine hundred twenty-nine".