420142334 has 32 divisors (see below), whose sum is σ = 676601856. Its totient is φ = 195180480.

The previous prime is 420142309. The next prime is 420142409. The reversal of 420142334 is 433241024.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691859 + ... + 692465.

It is an arithmetic number, because the mean of its divisors is an integer number (21143808).

Almost surely, 2^420142334 is an apocalyptic number.

420142334 is a deficient number, since it is larger than the sum of its proper divisors (256459522).

420142334 is a wasteful number, since it uses less digits than its factorization.

420142334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 420142334 is about 20497.3738317864. The cubic root of 420142334 is about 748.9718260849.

Adding to 420142334 its reverse (433241024), we get a palindrome (853383358).

The spelling of 420142334 in words is "four hundred twenty million, one hundred forty-two thousand, three hundred thirty-four".