1129298240 has 56 divisors (see below), whose sum is σ = 3073310592. Its totient is φ = 387187200.

The previous prime is 1129298237. The next prime is 1129298257. The reversal of 1129298240 is 428929211.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 1129298194 and 1129298203.

It is a congruent number.

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, 249836 + ... + 254315.

Almost surely, 2^1129298240 is an apocalyptic number.

1129298240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129298240 is an abundant number, since it is smaller than the sum of its proper divisors (1944012352).

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

1129298240 is an equidigital number, since it uses as much as digits as its factorization.

1129298240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504175 (or 504165 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1129298240 is about 33605.0329563891. The cubic root of 1129298240 is about 1041.3647762886.

The spelling of 1129298240 in words is "one billion, one hundred twenty-nine million, two hundred ninety-eight thousand, two hundred forty".