133506142 has 32 divisors (see below), whose sum is σ = 255492864. Its totient is φ = 50803200.

The previous prime is 133506137. The next prime is 133506187. The reversal of 133506142 is 241605331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3459 + ... + 16702.

It is an arithmetic number, because the mean of its divisors is an integer number (7984152).

Almost surely, 2^133506142 is an apocalyptic number.

133506142 is a deficient number, since it is larger than the sum of its proper divisors (121986722).

133506142 is a wasteful number, since it uses less digits than its factorization.

133506142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20224.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 133506142 is about 11554.4857955687. The cubic root of 133506142 is about 511.0935678324.

The spelling of 133506142 in words is "one hundred thirty-three million, five hundred six thousand, one hundred forty-two".