133340042 has 8 divisors (see below), whose sum is σ = 218192832. Its totient is φ = 60609100.

The previous prime is 133340023. The next prime is 133340047. The reversal of 133340042 is 240043331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 133339996 and 133340023.

It is not an unprimeable number, because it can be changed into a prime (133340047) 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, 3030434 + ... + 3030477.

It is an arithmetic number, because the mean of its divisors is an integer number (27274104).

Almost surely, 2^133340042 is an apocalyptic number.

133340042 is a deficient number, since it is larger than the sum of its proper divisors (84852790).

133340042 is a wasteful number, since it uses less digits than its factorization.

133340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060924.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133340042 is about 11547.2958739265. The cubic root of 133340042 is about 510.8815229762.

Adding to 133340042 its reverse (240043331), we get a palindrome (373383373).

The spelling of 133340042 in words is "one hundred thirty-three million, three hundred forty thousand, forty-two".