2142403 has 2 divisors, whose sum is σ = 2142404. Its totient is φ = 2142402.

The previous prime is 2142397. The next prime is 2142431. The reversal of 2142403 is 3042412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2142403 - 2⁹ = 2141891 is a prime.

It is a super-2 number, since 2×2142403² = 9179781228818, which contains 22 as substring.

2142403 is a lucky number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2142463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071201 + 1071202.

It is an arithmetic number, because the mean of its divisors is an integer number (1071202).

2^2142403 is an apocalyptic number.

2142403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142403 is an equidigital number, since it uses as much as digits as its factorization.

2142403 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 2142403 is about 1463.6949818866. The cubic root of 2142403 is about 128.9140905877.

Adding to 2142403 its reverse (3042412), we get a palindrome (5184815).

Subtracting 2142403 from its reverse (3042412), we obtain a palindrome (900009).

It can be divided in two parts, 21 and 42403, that added together give a palindrome (42424).

The spelling of 2142403 in words is "two million, one hundred forty-two thousand, four hundred three".