42402333331 has 4 divisors (see below), whose sum is σ = 42517871392. Its totient is φ = 42286795272.

The previous prime is 42402333289. The next prime is 42402333343. The reversal of 42402333331 is 13333320424.

It is a happy number.

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 42402333331 - 2⁷ = 42402333203 is a prime.

It is a super-2 number, since 2×42402333331² (a number of 22 digits) contains 22 as substring.

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 42402333331.

It is not an unprimeable number, because it can be changed into a prime (42402333931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57768480 + ... + 57769213.

It is an arithmetic number, because the mean of its divisors is an integer number (10629467848).

Almost surely, 2^42402333331 is an apocalyptic number.

42402333331 is a deficient number, since it is larger than the sum of its proper divisors (115538061).

42402333331 is a wasteful number, since it uses less digits than its factorization.

42402333331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115538060.

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 42402333331 its reverse (13333320424), we get a palindrome (55735653755).

The spelling of 42402333331 in words is "forty-two billion, four hundred two million, three hundred thirty-three thousand, three hundred thirty-one".