420341434 has 4 divisors (see below), whose sum is σ = 630512154. Its totient is φ = 210170716.

The previous prime is 420341413. The next prime is 420341443. The reversal of 420341434 is 434143024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 233937025 + 186404409 = 15295^2 + 13653^2 .

It is a super-2 number, since 2×420341434² = 353373842274352712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420341399 and 420341408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105085357 + ... + 105085360.

Almost surely, 2^420341434 is an apocalyptic number.

420341434 is a deficient number, since it is larger than the sum of its proper divisors (210170720).

420341434 is a wasteful number, since it uses less digits than its factorization.

420341434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210170719.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 420341434 is about 20502.2299762733. The cubic root of 420341434 is about 749.0901167445.

Adding to 420341434 its reverse (434143024), we get a palindrome (854484458).

The spelling of 420341434 in words is "four hundred twenty million, three hundred forty-one thousand, four hundred thirty-four".