1021345432 has 16 divisors (see below), whose sum is σ = 1981058400. Its totient is φ = 493063200.

The previous prime is 1021345421. The next prime is 1021345433. The reversal of 1021345432 is 2345431201.

It is a junction number, because it is equal to n+sod(n) for n = 1021345397 and 1021345406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021345433) 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, 2200944 + ... + 2201407.

It is an arithmetic number, because the mean of its divisors is an integer number (123816150).

Almost surely, 2^1021345432 is an apocalyptic number.

It is an amenable number.

1021345432 is a deficient number, since it is larger than the sum of its proper divisors (959712968).

1021345432 is a wasteful number, since it uses less digits than its factorization.

1021345432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402386 (or 4402382 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1021345432 is about 31958.4954589543. The cubic root of 1021345432 is about 1007.0651106579.

Adding to 1021345432 its reverse (2345431201), we get a palindrome (3366776633).

The spelling of 1021345432 in words is "one billion, twenty-one million, three hundred forty-five thousand, four hundred thirty-two".