420197934 has 16 divisors (see below), whose sum is σ = 905041872. Its totient is φ = 129291648.

The previous prime is 420197933. The next prime is 420197969. The reversal of 420197934 is 439791024.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 420197892 and 420197901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420197933) 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, 2693499 + ... + 2693654.

It is an arithmetic number, because the mean of its divisors is an integer number (56565117).

Almost surely, 2^420197934 is an apocalyptic number.

420197934 is an abundant number, since it is smaller than the sum of its proper divisors (484843938).

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

420197934 is a wasteful number, since it uses less digits than its factorization.

420197934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387171.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 420197934 is about 20498.7300582256. The cubic root of 420197934 is about 749.0048632990.

The spelling of 420197934 in words is "four hundred twenty million, one hundred ninety-seven thousand, nine hundred thirty-four".