1021266432 has 120 divisors (see below), whose sum is σ = 3121062516. Its totient is φ = 320372736.

The previous prime is 1021266419. The next prime is 1021266451. The reversal of 1021266432 is 2346621201.

1021266432 is a `hidden beast` number, since 1 + 0 + 2 + 12 + 6 + 643 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 964475136 + 56791296 = 31056^2 + 7536^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1021266396 and 1021266405.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71818 + ... + 84854.

Almost surely, 2^1021266432 is an apocalyptic number.

1021266432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021266432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560531258).

1021266432 is an abundant number, since it is smaller than the sum of its proper divisors (2099796084).

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

1021266432 is a wasteful number, since it uses less digits than its factorization.

1021266432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13078 (or 13059 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1021266432 is about 31957.2594569685. The cubic root of 1021266432 is about 1007.0391448443.

Adding to 1021266432 its reverse (2346621201), we get a palindrome (3367887633).

The spelling of 1021266432 in words is "one billion, twenty-one million, two hundred sixty-six thousand, four hundred thirty-two".