133251142 has 16 divisors (see below), whose sum is σ = 211406400. Its totient is φ = 62816040.

The previous prime is 133251133. The next prime is 133251149. The reversal of 133251142 is 241152331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133251149) 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, 292 + ... + 16327.

It is an arithmetic number, because the mean of its divisors is an integer number (13212900).

Almost surely, 2^133251142 is an apocalyptic number.

133251142 is a deficient number, since it is larger than the sum of its proper divisors (78155258).

133251142 is a wasteful number, since it uses less digits than its factorization.

133251142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16851.

The product of its digits is 720, while the sum is 22.

The square root of 133251142 is about 11543.4458460202. The cubic root of 133251142 is about 510.7679600286.

The spelling of 133251142 in words is "one hundred thirty-three million, two hundred fifty-one thousand, one hundred forty-two".