201541142 has 16 divisors (see below), whose sum is σ = 332316864. Its totient is φ = 90909000.

The previous prime is 201541141. The next prime is 201541169. The reversal of 201541142 is 241145102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201541141) 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, 32084 + ... + 37847.

It is an arithmetic number, because the mean of its divisors is an integer number (20769804).

Almost surely, 2^201541142 is an apocalyptic number.

201541142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201541142 is a deficient number, since it is larger than the sum of its proper divisors (130775722).

201541142 is a wasteful number, since it uses less digits than its factorization.

201541142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70075.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 201541142 is about 14196.5186577555. The cubic root of 201541142 is about 586.3018146519.

Adding to 201541142 its reverse (241145102), we get a palindrome (442686244).

The spelling of 201541142 in words is "two hundred one million, five hundred forty-one thousand, one hundred forty-two".