1429681 has 4 divisors (see below), whose sum is σ = 1559664. Its totient is φ = 1299700.

The previous prime is 1429669. The next prime is 1429697. The reversal of 1429681 is 1869241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1429681 - 2⁷ = 1429553 is a prime.

It is a super-2 number, since 2×1429681² = 4087975523522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64975 + ... + 64996.

It is an arithmetic number, because the mean of its divisors is an integer number (389916).

2^1429681 is an apocalyptic number.

1429681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1429681 is a deficient number, since it is larger than the sum of its proper divisors (129983).

1429681 is a wasteful number, since it uses less digits than its factorization.

1429681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129982.

The product of its digits is 3456, while the sum is 31.

The square root of 1429681 is about 1195.6926862702. The cubic root of 1429681 is about 112.6539390561.

The spelling of 1429681 in words is "one million, four hundred twenty-nine thousand, six hundred eighty-one".