1457742 has 32 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 407520.

The previous prime is 1457741. The next prime is 1457749. The reversal of 1457742 is 2477541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9 + ... + 1707.

It is an arithmetic number, because the mean of its divisors is an integer number (107100).

2^1457742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1457742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1713600).

1457742 is an abundant number, since it is smaller than the sum of its proper divisors (1969458).

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

1457742 is a wasteful number, since it uses less digits than its factorization.

1457742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728.

The product of its digits is 7840, while the sum is 30.

The square root of 1457742 is about 1207.3698687643. The cubic root of 1457742 is about 113.3862056262.

It can be divided in two parts, 145 and 7742, that added together give a palindrome (7887).

The spelling of 1457742 in words is "one million, four hundred fifty-seven thousand, seven hundred forty-two".