2020823542 has 4 divisors (see below), whose sum is σ = 3031235316. Its totient is φ = 1010411770.

The previous prime is 2020823521. The next prime is 2020823579. The reversal of 2020823542 is 2453280202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2453280202 = 2 ⋅1226640101.

It is a self number, because there is not a number n which added to its sum of digits gives 2020823542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505205884 + ... + 505205887.

It is an arithmetic number, because the mean of its divisors is an integer number (757808829).

Almost surely, 2^2020823542 is an apocalyptic number.

2020823542 is a deficient number, since it is larger than the sum of its proper divisors (1010411774).

2020823542 is a wasteful number, since it uses less digits than its factorization.

2020823542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010411773.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 2020823542 is about 44953.5709593799. The cubic root of 2020823542 is about 1264.2786311424.

The spelling of 2020823542 in words is "two billion, twenty million, eight hundred twenty-three thousand, five hundred forty-two".