33440340042 has 24 divisors (see below), whose sum is σ = 76716074916. Its totient is φ = 10491086976.

The previous prime is 33440340041. The next prime is 33440340047. The reversal of 33440340042 is 24004304433.

It can be written as a sum of positive squares in 2 ways, for example, as 31645207881 + 1795132161 = 177891^2 + 42369^2 .

It is a super-2 number, since 2×33440340042² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33440339988 and 33440340015.

It is not an unprimeable number, because it can be changed into a prime (33440340041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54640773 + ... + 54641384.

Almost surely, 2^33440340042 is an apocalyptic number.

33440340042 is an abundant number, since it is smaller than the sum of its proper divisors (43275734874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33440340042 is a wasteful number, since it uses less digits than its factorization.

33440340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109282182 (or 109282179 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 33440340042 its reverse (24004304433), we get a palindrome (57444644475).

The spelling of 33440340042 in words is "thirty-three billion, four hundred forty million, three hundred forty thousand, forty-two".