133021142 has 16 divisors (see below), whose sum is σ = 205305792. Its totient is φ = 64592640.

The previous prime is 133021099. The next prime is 133021153. The reversal of 133021142 is 241120331.

It is a self number, because there is not a number n which added to its sum of digits gives 133021142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48467 + ... + 51137.

It is an arithmetic number, because the mean of its divisors is an integer number (12831612).

Almost surely, 2^133021142 is an apocalyptic number.

133021142 is a deficient number, since it is larger than the sum of its proper divisors (72284650).

133021142 is a wasteful number, since it uses less digits than its factorization.

133021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133021142 is about 11533.4791801954. The cubic root of 133021142 is about 510.4739180548.

Adding to 133021142 its reverse (241120331), we get a palindrome (374141473).

The spelling of 133021142 in words is "one hundred thirty-three million, twenty-one thousand, one hundred forty-two".