201012142 has 4 divisors (see below), whose sum is σ = 301518216. Its totient is φ = 100506070.

The previous prime is 201012121. The next prime is 201012151. The reversal of 201012142 is 241210102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50253034 + ... + 50253037.

It is an arithmetic number, because the mean of its divisors is an integer number (75379554).

Almost surely, 2^201012142 is an apocalyptic number.

201012142 is a deficient number, since it is larger than the sum of its proper divisors (100506074).

201012142 is a wasteful number, since it uses less digits than its factorization.

201012142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100506073.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 201012142 is about 14177.8750876145. The cubic root of 201012142 is about 585.7883952174.

Adding to 201012142 its reverse (241210102), we get a palindrome (442222244).

The spelling of 201012142 in words is "two hundred one million, twelve thousand, one hundred forty-two".