1971422 has 16 divisors (see below), whose sum is σ = 3268512. Its totient is φ = 887040.

The previous prime is 1971401. The next prime is 1971427. The reversal of 1971422 is 2241791.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1971391 and 1971400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (204282).

2^1971422 is an apocalyptic number.

1971422 is a deficient number, since it is larger than the sum of its proper divisors (1297090).

1971422 is a wasteful number, since it uses less digits than its factorization.

1971422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563.

The product of its digits is 1008, while the sum is 26.

The square root of 1971422 is about 1404.0733599068. The cubic root of 1971422 is about 125.3891234068.

The spelling of 1971422 in words is "one million, nine hundred seventy-one thousand, four hundred twenty-two".