42003133331 has 4 divisors (see below), whose sum is σ = 42005630232. Its totient is φ = 42000636432.

The previous prime is 42003133327. The next prime is 42003133339. The reversal of 42003133331 is 13333130024.

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

It is a cyclic number.

It is not a de Polignac number, because 42003133331 - 2² = 42003133327 is a prime.

It is a super-2 number, since 2×42003133331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42003133297 and 42003133306.

It is not an unprimeable number, because it can be changed into a prime (42003133339) 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, 1223045 + ... + 1256918.

It is an arithmetic number, because the mean of its divisors is an integer number (10501407558).

Almost surely, 2^42003133331 is an apocalyptic number.

42003133331 is a deficient number, since it is larger than the sum of its proper divisors (2496901).

42003133331 is a wasteful number, since it uses less digits than its factorization.

42003133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496900.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 42003133331 its reverse (13333130024), we get a palindrome (55336263355).

The spelling of 42003133331 in words is "forty-two billion, three million, one hundred thirty-three thousand, three hundred thirty-one".