1129402450 has 24 divisors (see below), whose sum is σ = 2291661360. Its totient is φ = 410691600.

The previous prime is 1129402403. The next prime is 1129402457. The reversal of 1129402450 is 542049211.

It is not an unprimeable number, because it can be changed into a prime (1129402457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1026180 + ... + 1027279.

It is an arithmetic number, because the mean of its divisors is an integer number (95485890).

Almost surely, 2^1129402450 is an apocalyptic number.

1129402450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129402450 is an abundant number, since it is smaller than the sum of its proper divisors (1162258910).

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

1129402450 is a wasteful number, since it uses less digits than its factorization.

1129402450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053482 (or 2053477 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1129402450 is about 33606.5834324169. The cubic root of 1129402450 is about 1041.3968071793.

The spelling of 1129402450 in words is "one billion, one hundred twenty-nine million, four hundred two thousand, four hundred fifty".