420345134 has 32 divisors (see below), whose sum is σ = 700254720. Its totient is φ = 187639200.

The previous prime is 420345109. The next prime is 420345137. The reversal of 420345134 is 431543024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420345137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 685412 + ... + 686024.

It is an arithmetic number, because the mean of its divisors is an integer number (21882960).

Almost surely, 2^420345134 is an apocalyptic number.

420345134 is a deficient number, since it is larger than the sum of its proper divisors (279909586).

420345134 is a wasteful number, since it uses less digits than its factorization.

420345134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 420345134 is about 20502.3202101616. The cubic root of 420345134 is about 749.0923146603.

Adding to 420345134 its reverse (431543024), we get a palindrome (851888158).

The spelling of 420345134 in words is "four hundred twenty million, three hundred forty-five thousand, one hundred thirty-four".