2021133142 has 32 divisors (see below), whose sum is σ = 3647503872. Its totient is φ = 821192064.

The previous prime is 2021133131. The next prime is 2021133143. The reversal of 2021133142 is 2413311202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021133143) 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, 8613 + ... + 64159.

It is an arithmetic number, because the mean of its divisors is an integer number (113984496).

Almost surely, 2^2021133142 is an apocalyptic number.

2021133142 is a deficient number, since it is larger than the sum of its proper divisors (1626370730).

2021133142 is a wasteful number, since it uses less digits than its factorization.

2021133142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55692.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2021133142 is about 44957.0143804056. The cubic root of 2021133142 is about 1264.3431923916.

Adding to 2021133142 its reverse (2413311202), we get a palindrome (4434444344).

The spelling of 2021133142 in words is "two billion, twenty-one million, one hundred thirty-three thousand, one hundred forty-two".