133143542 has 16 divisors (see below), whose sum is σ = 228614400. Its totient is φ = 56969448.

The previous prime is 133143533. The next prime is 133143547. The reversal of 133143542 is 245341331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133143547) 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, 1709 + ... + 16407.

It is an arithmetic number, because the mean of its divisors is an integer number (14288400).

Almost surely, 2^133143542 is an apocalyptic number.

133143542 is a deficient number, since it is larger than the sum of its proper divisors (95470858).

133143542 is a wasteful number, since it uses less digits than its factorization.

133143542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15355.

The product of its digits is 4320, while the sum is 26.

The square root of 133143542 is about 11538.7842513845. The cubic root of 133143542 is about 510.6304416771.

Adding to 133143542 its reverse (245341331), we get a palindrome (378484873).

The spelling of 133143542 in words is "one hundred thirty-three million, one hundred forty-three thousand, five hundred forty-two".