133156342 has 32 divisors (see below), whose sum is σ = 238684320. Its totient is φ = 54996480.

The previous prime is 133156339. The next prime is 133156343. The reversal of 133156342 is 243651331.

It is a super-2 number, since 2×133156342² = 35461222829641928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133156342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133156343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4708 + ... + 16984.

It is an arithmetic number, because the mean of its divisors is an integer number (7458885).

Almost surely, 2^133156342 is an apocalyptic number.

133156342 is a deficient number, since it is larger than the sum of its proper divisors (105527978).

133156342 is a wasteful number, since it uses less digits than its factorization.

133156342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12336.

The product of its digits is 6480, while the sum is 28.

The square root of 133156342 is about 11539.3388892085. The cubic root of 133156342 is about 510.6468046192.

The spelling of 133156342 in words is "one hundred thirty-three million, one hundred fifty-six thousand, three hundred forty-two".