1020421342 has 8 divisors (see below), whose sum is σ = 1531341000. Its totient is φ = 509974344.

The previous prime is 1020421333. The next prime is 1020421351. The reversal of 1020421342 is 2431240201.

It is an interprime number because it is at equal distance from previous prime (1020421333) and next prime (1020421351).

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 112717 + ... + 121432.

It is an arithmetic number, because the mean of its divisors is an integer number (191417625).

Almost surely, 2^1020421342 is an apocalyptic number.

1020421342 is a deficient number, since it is larger than the sum of its proper divisors (510919658).

1020421342 is a wasteful number, since it uses less digits than its factorization.

1020421342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236330.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1020421342 is about 31944.0345291574. The cubic root of 1020421342 is about 1006.7612958473.

Adding to 1020421342 its reverse (2431240201), we get a palindrome (3451661543).

The spelling of 1020421342 in words is "one billion, twenty million, four hundred twenty-one thousand, three hundred forty-two".