133942487 has 8 divisors (see below), whose sum is σ = 153205536. Its totient is φ = 114711552.

The previous prime is 133942483. The next prime is 133942499. The reversal of 133942487 is 784249331.

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

It is a cyclic number.

It is not a de Polignac number, because 133942487 - 2² = 133942483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133942483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703 + ... + 16455.

It is an arithmetic number, because the mean of its divisors is an integer number (19150692).

Almost surely, 2^133942487 is an apocalyptic number.

133942487 is a deficient number, since it is larger than the sum of its proper divisors (19263049).

133942487 is a wasteful number, since it uses less digits than its factorization.

133942487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057.

The product of its digits is 145152, while the sum is 41.

The square root of 133942487 is about 11573.3524529412. The cubic root of 133942487 is about 511.6497734570.

The spelling of 133942487 in words is "one hundred thirty-three million, nine hundred forty-two thousand, four hundred eighty-seven".