420323142 has 16 divisors (see below), whose sum is σ = 841162032. Its totient is φ = 140021760.

The previous prime is 420323131. The next prime is 420323143. The reversal of 420323142 is 241323024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420323143) 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, 10459 + ... + 30822.

It is an arithmetic number, because the mean of its divisors is an integer number (52572627).

Almost surely, 2^420323142 is an apocalyptic number.

420323142 is an abundant number, since it is smaller than the sum of its proper divisors (420838890).

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

420323142 is a wasteful number, since it uses less digits than its factorization.

420323142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42983.

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

The square root of 420323142 is about 20501.7838736048. The cubic root of 420323142 is about 749.0792505342.

Adding to 420323142 its reverse (241323024), we get a palindrome (661646166).

The spelling of 420323142 in words is "four hundred twenty million, three hundred twenty-three thousand, one hundred forty-two".