42402133 has 4 divisors (see below), whose sum is σ = 44245728. Its totient is φ = 40558540.

The previous prime is 42402121. The next prime is 42402149. The reversal of 42402133 is 33120424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42402133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42402133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402103) 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, 921763 + ... + 921808.

It is an arithmetic number, because the mean of its divisors is an integer number (11061432).

Almost surely, 2^42402133 is an apocalyptic number.

It is an amenable number.

42402133 is a deficient number, since it is larger than the sum of its proper divisors (1843595).

42402133 is a wasteful number, since it uses less digits than its factorization.

42402133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843594.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42402133 is about 6511.6920228156. The cubic root of 42402133 is about 348.7085275042.

Adding to 42402133 its reverse (33120424), we get a palindrome (75522557).

The spelling of 42402133 in words is "forty-two million, four hundred two thousand, one hundred thirty-three".