420419634 has 16 divisors (see below), whose sum is σ = 841143072. Its totient is φ = 140089248.

The previous prime is 420419633. The next prime is 420419647. The reversal of 420419634 is 436914024.

It is a junction number, because it is equal to n+sod(n) for n = 420419595 and 420419604.

It is not an unprimeable number, because it can be changed into a prime (420419633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7902 + ... + 30054.

It is an arithmetic number, because the mean of its divisors is an integer number (52571442).

Almost surely, 2^420419634 is an apocalyptic number.

420419634 is an abundant number, since it is smaller than the sum of its proper divisors (420723438).

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

420419634 is a wasteful number, since it uses less digits than its factorization.

420419634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25321.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 420419634 is about 20504.1369972013. The cubic root of 420419634 is about 749.1365672489.

The spelling of 420419634 in words is "four hundred twenty million, four hundred nineteen thousand, six hundred thirty-four".