1421919 has 6 divisors (see below), whose sum is σ = 2053896. Its totient is φ = 947940.

The previous prime is 1421911. The next prime is 1421933. The reversal of 1421919 is 9191241.

It is not a de Polignac number, because 1421919 - 2³ = 1421911 is a prime.

It is a super-2 number, since 2×1421919² = 4043707285122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421892 and 1421901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421911) 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 5 ways as a sum of consecutive naturals, for example, 78987 + ... + 79004.

It is an arithmetic number, because the mean of its divisors is an integer number (342316).

2^1421919 is an apocalyptic number.

1421919 is a deficient number, since it is larger than the sum of its proper divisors (631977).

1421919 is a wasteful number, since it uses less digits than its factorization.

1421919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157997 (or 157994 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 1421919 is about 1192.4424514416. The cubic root of 1421919 is about 112.4496960286.

The spelling of 1421919 in words is "one million, four hundred twenty-one thousand, nine hundred nineteen".