1129400 has 24 divisors (see below), whose sum is σ = 2626320. Its totient is φ = 451680.

The previous prime is 1129399. The next prime is 1129409. The reversal of 1129400 is 49211.

1129400 = T₂₈₈ + T₂₈₉ + ... + T₃₁₂.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129409) 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 5 ways as a sum of consecutive naturals, for example, 2624 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (109430).

2^1129400 is an apocalyptic number.

1129400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1129400 is an abundant number, since it is smaller than the sum of its proper divisors (1496920).

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

1129400 is a wasteful number, since it uses less digits than its factorization.

1129400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663 (or 5654 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1129400 is about 1062.7323275407. The cubic root of 1129400 is about 104.1396054149.

The spelling of 1129400 in words is "one million, one hundred twenty-nine thousand, four hundred".