201525142 has 48 divisors (see below), whose sum is σ = 380646000. Its totient is φ = 79313472.

The previous prime is 201525131. The next prime is 201525161. The reversal of 201525142 is 241525102.

It is a super-2 number, since 2×201525142² = 81224765716240328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403609 + ... + 404107.

It is an arithmetic number, because the mean of its divisors is an integer number (7930125).

Almost surely, 2^201525142 is an apocalyptic number.

201525142 is a deficient number, since it is larger than the sum of its proper divisors (179120858).

201525142 is a wasteful number, since it uses less digits than its factorization.

201525142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845 (or 838 counting only the distinct ones).

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

The square root of 201525142 is about 14195.9551281342. The cubic root of 201525142 is about 586.2862990816.

The spelling of 201525142 in words is "two hundred one million, five hundred twenty-five thousand, one hundred forty-two".