1977442 has 8 divisors (see below), whose sum is σ = 2997036. Its totient is φ = 978432.

The previous prime is 1977433. The next prime is 1977499. The reversal of 1977442 is 2447791.

It can be written as a sum of positive squares in 2 ways, for example, as 1962801 + 14641 = 1401^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1977398 and 1977407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903 + ... + 5290.

2^1977442 is an apocalyptic number.

1977442 is a deficient number, since it is larger than the sum of its proper divisors (1019594).

1977442 is a wasteful number, since it uses less digits than its factorization.

1977442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292.

The product of its digits is 14112, while the sum is 34.

The square root of 1977442 is about 1406.2154884654. The cubic root of 1977442 is about 125.5166245179.

The spelling of 1977442 in words is "one million, nine hundred seventy-seven thousand, four hundred forty-two".