1429240 has 16 divisors (see below), whose sum is σ = 3215880. Its totient is φ = 571680.

The previous prime is 1429231. The next prime is 1429247. The reversal of 1429240 is 429241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17826 + ... + 17905.

2^1429240 is an apocalyptic number.

1429240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1429240 is an abundant number, since it is smaller than the sum of its proper divisors (1786640).

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

1429240 is a wasteful number, since it uses less digits than its factorization.

1429240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35742 (or 35738 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1429240 is about 1195.5082601137. The cubic root of 1429240 is about 112.6423547712.

Subtracting from 1429240 its reverse (429241), we obtain a palindrome (999999).

The spelling of 1429240 in words is "one million, four hundred twenty-nine thousand, two hundred forty".