1429740 has 108 divisors (see below), whose sum is σ = 4796064. Its totient is φ = 344448.

The previous prime is 1429733. The next prime is 1429741. The reversal of 1429740 is 479241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1429741) 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 35 ways as a sum of consecutive naturals, for example, 30397 + ... + 30443.

It is an arithmetic number, because the mean of its divisors is an integer number (44408).

2^1429740 is an apocalyptic number.

1429740 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 1429740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398032).

1429740 is an abundant number, since it is smaller than the sum of its proper divisors (3366324).

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

1429740 is a wasteful number, since it uses less digits than its factorization.

1429740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1429740 is about 1195.7173579070. The cubic root of 1429740 is about 112.6554887004.

The spelling of 1429740 in words is "one million, four hundred twenty-nine thousand, seven hundred forty".