201345142 has 4 divisors (see below), whose sum is σ = 302017716. Its totient is φ = 100672570.

The previous prime is 201345119. The next prime is 201345143. The reversal of 201345142 is 241543102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201345143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50336284 + ... + 50336287.

It is an arithmetic number, because the mean of its divisors is an integer number (75504429).

Almost surely, 2^201345142 is an apocalyptic number.

201345142 is a deficient number, since it is larger than the sum of its proper divisors (100672574).

201345142 is a wasteful number, since it uses less digits than its factorization.

201345142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100672573.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 201345142 is about 14189.6138777628. The cubic root of 201345142 is about 586.1116923001. Note that the first 3 decimals are identical.

Adding to 201345142 its reverse (241543102), we get a palindrome (442888244).

The spelling of 201345142 in words is "two hundred one million, three hundred forty-five thousand, one hundred forty-two".