133159642 has 16 divisors (see below), whose sum is σ = 249026112. Its totient is φ = 51880320.

The previous prime is 133159597. The next prime is 133159643. The reversal of 133159642 is 246951331.

It is a junction number, because it is equal to n+sod(n) for n = 133159598 and 133159607.

It is not an unprimeable number, because it can be changed into a prime (133159643) 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, 432183 + ... + 432490.

It is an arithmetic number, because the mean of its divisors is an integer number (15564132).

Almost surely, 2^133159642 is an apocalyptic number.

133159642 is a deficient number, since it is larger than the sum of its proper divisors (115866470).

133159642 is a wasteful number, since it uses less digits than its factorization.

133159642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864693.

The product of its digits is 19440, while the sum is 34.

The square root of 133159642 is about 11539.4818774501. The cubic root of 133159642 is about 510.6510230202.

It can be divided in two parts, 133 and 159642, that multiplied together give a triangular number (21232386 = T₆₅₁₆).

The spelling of 133159642 in words is "one hundred thirty-three million, one hundred fifty-nine thousand, six hundred forty-two".