1020521434 has 16 divisors (see below), whose sum is σ = 1564448256. Its totient is φ = 499054000.

The previous prime is 1020521429. The next prime is 1020521443. The reversal of 1020521434 is 4341250201.

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, 175839 + ... + 181549.

It is an arithmetic number, because the mean of its divisors is an integer number (97778016).

Almost surely, 2^1020521434 is an apocalyptic number.

1020521434 is a deficient number, since it is larger than the sum of its proper divisors (543926822).

1020521434 is a wasteful number, since it uses less digits than its factorization.

1020521434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1020521434 is about 31945.6011682360. The cubic root of 1020521434 is about 1006.7942121382.

Adding to 1020521434 its reverse (4341250201), we get a palindrome (5361771635).

The spelling of 1020521434 in words is "one billion, twenty million, five hundred twenty-one thousand, four hundred thirty-four".