1097742 has 8 divisors (see below), whose sum is σ = 2195496. Its totient is φ = 365912.

The previous prime is 1097729. The next prime is 1097743. The reversal of 1097742 is 2477901.

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

1097742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097743) 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, 91473 + ... + 91484.

It is an arithmetic number, because the mean of its divisors is an integer number (274437).

2^1097742 is an apocalyptic number.

1097742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1097742 is a wasteful number, since it uses less digits than its factorization.

1097742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182962.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 1097742 is about 1047.7318359199. The cubic root of 1097742 is about 103.1573301755.

The spelling of 1097742 in words is "one million, ninety-seven thousand, seven hundred forty-two".