133723442 has 8 divisors (see below), whose sum is σ = 201270636. Its totient is φ = 66633232.

The previous prime is 133723393. The next prime is 133723451. The reversal of 133723442 is 244327331.

It can be written as a sum of positive squares in 2 ways, for example, as 127215841 + 6507601 = 11279^2 + 2551^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113513 + ... + 114684.

Almost surely, 2^133723442 is an apocalyptic number.

133723442 is a deficient number, since it is larger than the sum of its proper divisors (67547194).

133723442 is a wasteful number, since it uses less digits than its factorization.

133723442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228492.

The product of its digits is 12096, while the sum is 29.

The square root of 133723442 is about 11563.8852467499. The cubic root of 133723442 is about 511.3707097163.

The spelling of 133723442 in words is "one hundred thirty-three million, seven hundred twenty-three thousand, four hundred forty-two".