420321342 has 32 divisors (see below), whose sum is σ = 966868992. Its totient is φ = 119325024.

The previous prime is 420321301. The next prime is 420321347. The reversal of 420321342 is 243123024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420321347) 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, 25278 + ... + 38465.

It is an arithmetic number, because the mean of its divisors is an integer number (30214656).

Almost surely, 2^420321342 is an apocalyptic number.

420321342 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

420321342 is an abundant number, since it is smaller than the sum of its proper divisors (546547650).

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

420321342 is a wasteful number, since it uses less digits than its factorization.

420321342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63912.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 420321342 is about 20501.7399749387. The cubic root of 420321342 is about 749.0781812422.

Adding to 420321342 its reverse (243123024), we get a palindrome (663444366).

The spelling of 420321342 in words is "four hundred twenty million, three hundred twenty-one thousand, three hundred forty-two".