1262091012 has 96 divisors (see below), whose sum is σ = 3631337472. Its totient is φ = 332228736.

The previous prime is 1262090989. The next prime is 1262091013. The reversal of 1262091012 is 2101902621.

It is not an unprimeable number, because it can be changed into a prime (1262091013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967953 + ... + 969255.

It is an arithmetic number, because the mean of its divisors is an integer number (37826432).

Almost surely, 2^1262091012 is an apocalyptic number.

1262091012 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 1262091012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815668736).

1262091012 is an abundant number, since it is smaller than the sum of its proper divisors (2369246460).

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

1262091012 is a wasteful number, since it uses less digits than its factorization.

1262091012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1262091012 is about 35525.9202836464. The cubic root of 1262091012 is about 1080.6794455739.

Adding to 1262091012 its reverse (2101902621), we get a palindrome (3363993633).

The spelling of 1262091012 in words is "one billion, two hundred sixty-two million, ninety-one thousand, twelve".