1021240434 has 16 divisors (see below), whose sum is σ = 2131284672. Its totient is φ = 325612848.

The previous prime is 1021240417. The next prime is 1021240463. The reversal of 1021240434 is 4340421201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021240434.

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, 3700009 + ... + 3700284.

It is an arithmetic number, because the mean of its divisors is an integer number (133205292).

Almost surely, 2^1021240434 is an apocalyptic number.

1021240434 is an abundant number, since it is smaller than the sum of its proper divisors (1110044238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021240434 is a wasteful number, since it uses less digits than its factorization.

1021240434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400321.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1021240434 is about 31956.8526923413. The cubic root of 1021240434 is about 1007.0305994981.

Adding to 1021240434 its reverse (4340421201), we get a palindrome (5361661635).

The spelling of 1021240434 in words is "one billion, twenty-one million, two hundred forty thousand, four hundred thirty-four".