42281001 has 32 divisors (see below), whose sum is σ = 71904000. Its totient is φ = 24053760.

The previous prime is 42280999. The next prime is 42281009. The reversal of 42281001 is 10018224.

It is not a de Polignac number, because 42281001 - 2¹ = 42280999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42281009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65641 + ... + 66281.

It is an arithmetic number, because the mean of its divisors is an integer number (2247000).

Almost surely, 2^42281001 is an apocalyptic number.

It is an amenable number.

42281001 is a deficient number, since it is larger than the sum of its proper divisors (29622999).

42281001 is a wasteful number, since it uses less digits than its factorization.

42281001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 42281001 is about 6502.3842550252. The cubic root of 42281001 is about 348.3761539101.

Adding to 42281001 its reverse (10018224), we get a palindrome (52299225).

The spelling of 42281001 in words is "forty-two million, two hundred eighty-one thousand, one".