1021040432 has 20 divisors (see below), whose sum is σ = 1978767696. Its totient is φ = 510390720.

The previous prime is 1021040431. The next prime is 1021040437. The reversal of 1021040432 is 2340401201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021040432.

It is not an unprimeable number, because it can be changed into a prime (1021040431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103958 + ... + 113354.

Almost surely, 2^1021040432 is an apocalyptic number.

It is an amenable number.

1021040432 is a deficient number, since it is larger than the sum of its proper divisors (957727264).

1021040432 is an equidigital number, since it uses as much as digits as its factorization.

1021040432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16196 (or 16190 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1021040432 is about 31953.7232885309. The cubic root of 1021040432 is about 1006.9648555013.

Adding to 1021040432 its reverse (2340401201), we get a palindrome (3361441633).

The spelling of 1021040432 in words is "one billion, twenty-one million, forty thousand, four hundred thirty-two".