1020021342 has 32 divisors (see below), whose sum is σ = 2137943808. Its totient is φ = 323818176.

The previous prime is 1020021283. The next prime is 1020021347. The reversal of 1020021342 is 2431200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020021347) 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, 16293 + ... + 48015.

It is an arithmetic number, because the mean of its divisors is an integer number (66810744).

Almost surely, 2^1020021342 is an apocalyptic number.

1020021342 is an abundant number, since it is smaller than the sum of its proper divisors (1117922466).

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

1020021342 is a wasteful number, since it uses less digits than its factorization.

1020021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31984.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1020021342 is about 31937.7729655654. The cubic root of 1020021342 is about 1006.6297302111.

Adding to 1020021342 its reverse (2431200201), we get a palindrome (3451221543).

The spelling of 1020021342 in words is "one billion, twenty million, twenty-one thousand, three hundred forty-two".