201255142 has 32 divisors (see below), whose sum is σ = 338857344. Its totient is φ = 88852800.

The previous prime is 201255139. The next prime is 201255143. The reversal of 201255142 is 241552102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201255143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312673 + ... + 313315.

It is an arithmetic number, because the mean of its divisors is an integer number (10589292).

Almost surely, 2^201255142 is an apocalyptic number.

201255142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201255142 is a deficient number, since it is larger than the sum of its proper divisors (137602202).

201255142 is a wasteful number, since it uses less digits than its factorization.

201255142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 201255142 is about 14186.4421896401. The cubic root of 201255142 is about 586.0243498834.

The spelling of 201255142 in words is "two hundred one million, two hundred fifty-five thousand, one hundred forty-two".