1957423 has 4 divisors (see below), whose sum is σ = 2108008. Its totient is φ = 1806840.

The previous prime is 1957391. The next prime is 1957441. The reversal of 1957423 is 3247591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3247591 = 31 ⋅104761.

It is a cyclic number.

It is not a de Polignac number, because 1957423 - 2⁵ = 1957391 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 5⁹ + 7² + 4 + 2¹¹ + 3⁷ .

It is a Duffinian number.

1957423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1957453) 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, 75273 + ... + 75298.

It is an arithmetic number, because the mean of its divisors is an integer number (527002).

2^1957423 is an apocalyptic number.

1957423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1957423 is a deficient number, since it is larger than the sum of its proper divisors (150585).

1957423 is a wasteful number, since it uses less digits than its factorization.

1957423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150584.

The product of its digits is 7560, while the sum is 31.

The square root of 1957423 is about 1399.0793401376. The cubic root of 1957423 is about 125.0916234913.

The spelling of 1957423 in words is "one million, nine hundred fifty-seven thousand, four hundred twenty-three".