1021432434 has 64 divisors (see below), whose sum is σ = 2326672512. Its totient is φ = 296179200.

The previous prime is 1021432427. The next prime is 1021432453. The reversal of 1021432434 is 4342341201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145534 + ... + 152390.

It is an arithmetic number, because the mean of its divisors is an integer number (36354258).

Almost surely, 2^1021432434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021432434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1163336256).

1021432434 is an abundant number, since it is smaller than the sum of its proper divisors (1305240078).

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

1021432434 is a wasteful number, since it uses less digits than its factorization.

1021432434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1021432434 is about 31959.8566016808. The cubic root of 1021432434 is about 1007.0937050290.

Adding to 1021432434 its reverse (4342341201), we get a palindrome (5363773635).

The spelling of 1021432434 in words is "one billion, twenty-one million, four hundred thirty-two thousand, four hundred thirty-four".