1957742 has 4 divisors (see below), whose sum is σ = 2936616. Its totient is φ = 978870.

The previous prime is 1957729. The next prime is 1957759. The reversal of 1957742 is 2477591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2477591 = 53 ⋅46747.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489434 + ... + 489437.

It is an arithmetic number, because the mean of its divisors is an integer number (734154).

2^1957742 is an apocalyptic number.

1957742 is a deficient number, since it is larger than the sum of its proper divisors (978874).

1957742 is an equidigital number, since it uses as much as digits as its factorization.

1957742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978873.

The product of its digits is 17640, while the sum is 35.

The square root of 1957742 is about 1399.1933390350. The cubic root of 1957742 is about 125.0984184901.

The spelling of 1957742 in words is "one million, nine hundred fifty-seven thousand, seven hundred forty-two".