423135840 has 48 divisors (see below), whose sum is σ = 1332879408. Its totient is φ = 112836096.

The previous prime is 423135829. The next prime is 423135859. The reversal of 423135840 is 48531324.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 423135798 and 423135807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440287 + ... + 441246.

It is an arithmetic number, because the mean of its divisors is an integer number (27768321).

Almost surely, 2^423135840 is an apocalyptic number.

423135840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423135840 is an abundant number, since it is smaller than the sum of its proper divisors (909743568).

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

423135840 is a wasteful number, since it uses less digits than its factorization.

423135840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881551 (or 881543 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 423135840 is about 20570.2659195257. The cubic root of 423135840 is about 750.7464213383.

The spelling of 423135840 in words is "four hundred twenty-three million, one hundred thirty-five thousand, eight hundred forty".