1531742 has 16 divisors (see below), whose sum is σ = 2442960. Its totient is φ = 718272.

The previous prime is 1531729. The next prime is 1531769. The reversal of 1531742 is 2471351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6458 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (152685).

2^1531742 is an apocalyptic number.

1531742 is a deficient number, since it is larger than the sum of its proper divisors (911218).

1531742 is a wasteful number, since it uses less digits than its factorization.

1531742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427.

The product of its digits is 840, while the sum is 23.

The square root of 1531742 is about 1237.6356491310. The cubic root of 1531742 is about 115.2732506580.

The spelling of 1531742 in words is "one million, five hundred thirty-one thousand, seven hundred forty-two".