133142307 has 8 divisors (see below), whose sum is σ = 180872784. Its totient is φ = 87086688.

The previous prime is 133142281. The next prime is 133142323. The reversal of 133142307 is 703241331.

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

It is a de Polignac number, because none of the positive numbers 2^k-133142307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133142327) 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, 418528 + ... + 418845.

It is an arithmetic number, because the mean of its divisors is an integer number (22609098).

Almost surely, 2^133142307 is an apocalyptic number.

133142307 is a deficient number, since it is larger than the sum of its proper divisors (47730477).

133142307 is an equidigital number, since it uses as much as digits as its factorization.

133142307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837429.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 133142307 is about 11538.7307360905. The cubic root of 133142307 is about 510.6288628534.

Adding to 133142307 its reverse (703241331), we get a palindrome (836383638).

The spelling of 133142307 in words is "one hundred thirty-three million, one hundred forty-two thousand, three hundred seven".