42033331 has 4 divisors (see below), whose sum is σ = 42722464. Its totient is φ = 41344200.

The previous prime is 42033307. The next prime is 42033337. The reversal of 42033331 is 13333024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42033331 is a prime.

It is a super-2 number, since 2×42033331² = 3533601829911122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42033299 and 42033308.

It is not an unprimeable number, because it can be changed into a prime (42033337) 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, 344475 + ... + 344596.

It is an arithmetic number, because the mean of its divisors is an integer number (10680616).

Almost surely, 2^42033331 is an apocalyptic number.

42033331 is a deficient number, since it is larger than the sum of its proper divisors (689133).

42033331 is an equidigital number, since it uses as much as digits as its factorization.

42033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689132.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 42033331 is about 6483.3117308980. The cubic root of 42033331 is about 347.6945921149.

Adding to 42033331 its reverse (13333024), we get a palindrome (55366355).

The spelling of 42033331 in words is "forty-two million, thirty-three thousand, three hundred thirty-one".