342021403 has 2 divisors, whose sum is σ = 342021404. Its totient is φ = 342021402.

The previous prime is 342021373. The next prime is 342021409. The reversal of 342021403 is 304120243.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 342021403 - 2⁵ = 342021371 is a prime.

It is a super-2 number, since 2×342021403² = 233957280220176818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342021409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171010701 + 171010702.

It is an arithmetic number, because the mean of its divisors is an integer number (171010702).

Almost surely, 2^342021403 is an apocalyptic number.

342021403 is a deficient number, since it is larger than the sum of its proper divisors (1).

342021403 is an equidigital number, since it uses as much as digits as its factorization.

342021403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 342021403 is about 18493.8206706997. The cubic root of 342021403 is about 699.3336536457. Note that the first 3 decimals are identical.

Adding to 342021403 its reverse (304120243), we get a palindrome (646141646).

The spelling of 342021403 in words is "three hundred forty-two million, twenty-one thousand, four hundred three".