1427919 has 4 divisors (see below), whose sum is σ = 1903896. Its totient is φ = 951944.

The previous prime is 1427917. The next prime is 1427927. The reversal of 1427919 is 9197241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9197241 = 3 ⋅3065747.

It is a cyclic number.

It is not a de Polignac number, because 1427919 - 2¹ = 1427917 is a prime.

It is a super-2 number, since 2×1427919² = 4077905341122, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1427919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427911) 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, 237984 + ... + 237989.

It is an arithmetic number, because the mean of its divisors is an integer number (475974).

2^1427919 is an apocalyptic number.

1427919 is a deficient number, since it is larger than the sum of its proper divisors (475977).

1427919 is an equidigital number, since it uses as much as digits as its factorization.

1427919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475976.

The product of its digits is 4536, while the sum is 33.

The square root of 1427919 is about 1194.9556477125. The cubic root of 1427919 is about 112.6076401867.

It can be divided in two parts, 1427 and 919, that added together give a triangular number (2346 = T₆₈).

The spelling of 1427919 in words is "one million, four hundred twenty-seven thousand, nine hundred nineteen".