201142403 has 32 divisors (see below), whose sum is σ = 259200000. Its totient is φ = 154714560.

The previous prime is 201142399. The next prime is 201142421. The reversal of 201142403 is 304241102.

It is not a de Polignac number, because 201142403 - 2² = 201142399 is a prime.

It is a super-2 number, since 2×201142403² = 80916532569228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201142703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335498 + ... + 336096.

It is an arithmetic number, because the mean of its divisors is an integer number (8100000).

Almost surely, 2^201142403 is an apocalyptic number.

201142403 is a deficient number, since it is larger than the sum of its proper divisors (58057597).

201142403 is an equidigital number, since it uses as much as digits as its factorization.

201142403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 201142403 is about 14182.4681561426. The cubic root of 201142403 is about 585.9149031731.

Adding to 201142403 its reverse (304241102), we get a palindrome (505383505).

The spelling of 201142403 in words is "two hundred one million, one hundred forty-two thousand, four hundred three".