400242103 has 2 divisors, whose sum is σ = 400242104. Its totient is φ = 400242102.

The previous prime is 400242097. The next prime is 400242109. The reversal of 400242103 is 301242004.

It is a balanced prime because it is at equal distance from previous prime (400242097) and next prime (400242109).

It is a cyclic number.

It is not a de Polignac number, because 400242103 - 2⁵ = 400242071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400242109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200121051 + 200121052.

It is an arithmetic number, because the mean of its divisors is an integer number (200121052).

Almost surely, 2^400242103 is an apocalyptic number.

400242103 is a deficient number, since it is larger than the sum of its proper divisors (1).

400242103 is an equidigital number, since it uses as much as digits as its factorization.

400242103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400242103 is about 20006.0516594355. The cubic root of 400242103 is about 736.9549222601.

Adding to 400242103 its reverse (301242004), we get a palindrome (701484107).

Subtracting from 400242103 its reverse (301242004), we obtain a palindrome (99000099).

The spelling of 400242103 in words is "four hundred million, two hundred forty-two thousand, one hundred three".