403542101 has 2 divisors, whose sum is σ = 403542102. Its totient is φ = 403542100.

The previous prime is 403542079. The next prime is 403542149. The reversal of 403542101 is 101245304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370755025 + 32787076 = 19255^2 + 5726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403542101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403542151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201771050 + 201771051.

It is an arithmetic number, because the mean of its divisors is an integer number (201771051).

Almost surely, 2^403542101 is an apocalyptic number.

It is an amenable number.

403542101 is a deficient number, since it is larger than the sum of its proper divisors (1).

403542101 is an equidigital number, since it uses as much as digits as its factorization.

403542101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 403542101 is about 20088.3573494699. The cubic root of 403542101 is about 738.9747800639.

Adding to 403542101 its reverse (101245304), we get a palindrome (504787405).

The spelling of 403542101 in words is "four hundred three million, five hundred forty-two thousand, one hundred one".