2021404342 has 16 divisors (see below), whose sum is σ = 3164430240. Its totient is φ = 967211392.

The previous prime is 2021404309. The next prime is 2021404351. The reversal of 2021404342 is 2434041202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147658 + ... + 160765.

It is an arithmetic number, because the mean of its divisors is an integer number (197776890).

Almost surely, 2^2021404342 is an apocalyptic number.

2021404342 is a deficient number, since it is larger than the sum of its proper divisors (1143025898).

2021404342 is a wasteful number, since it uses less digits than its factorization.

2021404342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308567.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2021404342 is about 44960.0304937619. The cubic root of 2021404342 is about 1264.3997406271.

Adding to 2021404342 its reverse (2434041202), we get a palindrome (4455445544).

The spelling of 2021404342 in words is "two billion, twenty-one million, four hundred four thousand, three hundred forty-two".