2021526442 has 32 divisors (see below), whose sum is σ = 3413265408. Its totient is φ = 890942976.

The previous prime is 2021526433. The next prime is 2021526517. The reversal of 2021526442 is 2446251202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021526442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399943 + ... + 404965.

It is an arithmetic number, because the mean of its divisors is an integer number (106664544).

Almost surely, 2^2021526442 is an apocalyptic number.

2021526442 is a deficient number, since it is larger than the sum of its proper divisors (1391738966).

2021526442 is a wasteful number, since it uses less digits than its factorization.

2021526442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734.

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

The square root of 2021526442 is about 44961.3883460020. The cubic root of 2021526442 is about 1264.4251981925.

Adding to 2021526442 its reverse (2446251202), we get a palindrome (4467777644).

The spelling of 2021526442 in words is "two billion, twenty-one million, five hundred twenty-six thousand, four hundred forty-two".