42001433 has 4 divisors (see below), whose sum is σ = 42098868. Its totient is φ = 41904000.

The previous prime is 42001397. The next prime is 42001447. The reversal of 42001433 is 33410024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17280649 + 24720784 = 4157^2 + 4972^2 .

It is a cyclic number.

It is not a de Polignac number, because 42001433 - 2⁶ = 42001369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42061433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48068 + ... + 48933.

It is an arithmetic number, because the mean of its divisors is an integer number (10524717).

Almost surely, 2^42001433 is an apocalyptic number.

It is an amenable number.

42001433 is a deficient number, since it is larger than the sum of its proper divisors (97435).

42001433 is an equidigital number, since it uses as much as digits as its factorization.

42001433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97434.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42001433 is about 6480.8512558151. The cubic root of 42001433 is about 347.6066177343.

Adding to 42001433 its reverse (33410024), we get a palindrome (75411457).

The spelling of 42001433 in words is "forty-two million, one thousand, four hundred thirty-three".