1420879 has 2 divisors, whose sum is σ = 1420880. Its totient is φ = 1420878.

The previous prime is 1420847. The next prime is 1420883. The reversal of 1420879 is 9780241.

It is a strong prime.

It is an emirp because it is prime and its reverse (9780241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1420879 - 2⁵ = 1420847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420819) 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 as a sum of consecutive naturals, namely, 710439 + 710440.

It is an arithmetic number, because the mean of its divisors is an integer number (710440).

2^1420879 is an apocalyptic number.

1420879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420879 is an equidigital number, since it uses as much as digits as its factorization.

1420879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1420879 is about 1192.0062919297. The cubic root of 1420879 is about 112.4222738835.

The spelling of 1420879 in words is "one million, four hundred twenty thousand, eight hundred seventy-nine".