133870742 has 4 divisors (see below), whose sum is σ = 200806116. Its totient is φ = 66935370.

The previous prime is 133870721. The next prime is 133870771. The reversal of 133870742 is 247078331.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33467684 + ... + 33467687.

It is an arithmetic number, because the mean of its divisors is an integer number (50201529).

Almost surely, 2^133870742 is an apocalyptic number.

133870742 is a deficient number, since it is larger than the sum of its proper divisors (66935374).

133870742 is an equidigital number, since it uses as much as digits as its factorization.

133870742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66935373.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 133870742 is about 11570.2524605127. The cubic root of 133870742 is about 511.5584037208.

The spelling of 133870742 in words is "one hundred thirty-three million, eight hundred seventy thousand, seven hundred forty-two".