420370434 has 24 divisors (see below), whose sum is σ = 993603312. Its totient is φ = 127384920.

The previous prime is 420370411. The next prime is 420370453. The reversal of 420370434 is 434073024.

It is a super-2 number, since 2×420370434² = 353422603562696712, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420370398 and 420370407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1061344 + ... + 1061739.

It is an arithmetic number, because the mean of its divisors is an integer number (41400138).

Almost surely, 2^420370434 is an apocalyptic number.

420370434 is an abundant number, since it is smaller than the sum of its proper divisors (573232878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420370434 is a wasteful number, since it uses less digits than its factorization.

420370434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123102 (or 2123099 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 420370434 is about 20502.9372042154. The cubic root of 420370434 is about 749.1073433069.

The spelling of 420370434 in words is "four hundred twenty million, three hundred seventy thousand, four hundred thirty-four".