42230661001 has 9 divisors (see below), whose sum is σ = 42728999701. Its totient is φ = 41738075104.

The previous prime is 42230660999. The next prime is 42230661037. The reversal of 42230661001 is 10016603224.

The square root of 42230661001 is 205501.

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

It can be written as a sum of positive squares in 4 ways, for example, as 49716601 + 42180944400 = 7051^2 + 205380^2 .

It is not a de Polignac number, because 42230661001 - 2¹ = 42230660999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42230661301) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 18288435 + ... + 18290743.

Almost surely, 2^42230661001 is an apocalyptic number.

42230661001 is the 205501-st square number.

42230661001 is the 102751-st centered octagonal number.

It is an amenable number.

42230661001 is a deficient number, since it is larger than the sum of its proper divisors (498338700).

42230661001 is an frugal number, since it uses more digits than its factorization.

42230661001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4796 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Multiplying 42230661001 by its sum of digits (25), we get a square (1055766525025 = 1027505²).

The spelling of 42230661001 in words is "forty-two billion, two hundred thirty million, six hundred sixty-one thousand, one".