2021240534 has 16 divisors (see below), whose sum is σ = 3213124848. Its totient is φ = 950307072.

The previous prime is 2021240531. The next prime is 2021240537. The reversal of 2021240534 is 4350421202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2021240531) and next prime (2021240537).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021240531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11714 + ... + 64650.

It is an arithmetic number, because the mean of its divisors is an integer number (200820303).

Almost surely, 2^2021240534 is an apocalyptic number.

2021240534 is a deficient number, since it is larger than the sum of its proper divisors (1191884314).

2021240534 is a wasteful number, since it uses less digits than its factorization.

2021240534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54079.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2021240534 is about 44958.2087499046. The cubic root of 2021240534 is about 1264.3655854305.

Adding to 2021240534 its reverse (4350421202), we get a palindrome (6371661736).

The spelling of 2021240534 in words is "two billion, twenty-one million, two hundred forty thousand, five hundred thirty-four".