421322142 has 16 divisors (see below), whose sum is σ = 879281280. Its totient is φ = 134334552.

The previous prime is 421322117. The next prime is 421322159. The reversal of 421322142 is 241223124.

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 7 ways as a sum of consecutive naturals, for example, 1526392 + ... + 1526667.

It is an arithmetic number, because the mean of its divisors is an integer number (54955080).

Almost surely, 2^421322142 is an apocalyptic number.

421322142 is an abundant number, since it is smaller than the sum of its proper divisors (457959138).

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

421322142 is a wasteful number, since it uses less digits than its factorization.

421322142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053087.

The product of its digits is 768, while the sum is 21.

The square root of 421322142 is about 20526.1331477704. The cubic root of 421322142 is about 749.6722372274.

Adding to 421322142 its reverse (241223124), we get a palindrome (662545266).

The spelling of 421322142 in words is "four hundred twenty-one million, three hundred twenty-two thousand, one hundred forty-two".