203142401 has 32 divisors (see below), whose sum is σ = 269568000. Its totient is φ = 148204800.

The previous prime is 203142397. The next prime is 203142403. The reversal of 203142401 is 104241302.

It is a cyclic number.

It is not a de Polignac number, because 203142401 - 2² = 203142397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203142401.

It is not an unprimeable number, because it can be changed into a prime (203142403) 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, 406850 + ... + 407348.

It is an arithmetic number, because the mean of its divisors is an integer number (8424000).

Almost surely, 2^203142401 is an apocalyptic number.

It is an amenable number.

203142401 is a deficient number, since it is larger than the sum of its proper divisors (66425599).

203142401 is a wasteful number, since it uses less digits than its factorization.

203142401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

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

The square root of 203142401 is about 14252.8032681294. The cubic root of 203142401 is about 587.8504573278.

Adding to 203142401 its reverse (104241302), we get a palindrome (307383703).

The spelling of 203142401 in words is "two hundred three million, one hundred forty-two thousand, four hundred one".