1202749440 has 128 divisors (see below), whose sum is σ = 3850312320. Its totient is φ = 320602112.

The previous prime is 1202749423. The next prime is 1202749469. The reversal of 1202749440 is 449472021.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490297 + ... + 492743.

It is an arithmetic number, because the mean of its divisors is an integer number (30080565).

Almost surely, 2^1202749440 is an apocalyptic number.

1202749440 is a gapful number since it is divisible by the number (10) 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 1202749440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1925156160).

1202749440 is an abundant number, since it is smaller than the sum of its proper divisors (2647562880).

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

1202749440 is an frugal number, since it uses more digits than its factorization.

1202749440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2457 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1202749440 is about 34680.6781940607. The cubic root of 1202749440 is about 1063.4695379050.

The spelling of 1202749440 in words is "one billion, two hundred two million, seven hundred forty-nine thousand, four hundred forty".