1420829 has 4 divisors (see below), whose sum is σ = 1424640. Its totient is φ = 1417020.

The previous prime is 1420819. The next prime is 1420831. The reversal of 1420829 is 9280241.

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 1420829 - 2¹⁶ = 1355293 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420798 and 1420807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420819) 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, 1277 + ... + 2114.

It is an arithmetic number, because the mean of its divisors is an integer number (356160).

2^1420829 is an apocalyptic number.

It is an amenable number.

1420829 is a deficient number, since it is larger than the sum of its proper divisors (3811).

1420829 is an equidigital number, since it uses as much as digits as its factorization.

1420829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1420829 is about 1191.9853187015. The cubic root of 1420829 is about 112.4209551741.

The spelling of 1420829 in words is "one million, four hundred twenty thousand, eight hundred twenty-nine".