1977043 has 4 divisors (see below), whose sum is σ = 1990288. Its totient is φ = 1963800.

The previous prime is 1977023. The next prime is 1977067. The reversal of 1977043 is 3407791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3407791 = 127 ⋅26833.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1977043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1976996 and 1977014.

It is not an unprimeable number, because it can be changed into a prime (1977023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6396 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (497572).

2^1977043 is an apocalyptic number.

1977043 is a deficient number, since it is larger than the sum of its proper divisors (13245).

1977043 is a wasteful number, since it uses less digits than its factorization.

1977043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 1977043 is about 1406.0736111598. The cubic root of 1977043 is about 125.5081818764.

The spelling of 1977043 in words is "one million, nine hundred seventy-seven thousand, forty-three".