1491742 has 16 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 633528.

The previous prime is 1491739. The next prime is 1491761. The reversal of 1491742 is 2471941.

It is a self number, because there is not a number n which added to its sum of digits gives 1491742.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359 + ... + 2197.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^1491742 is an apocalyptic number.

1491742 is a deficient number, since it is larger than the sum of its proper divisors (1088738).

1491742 is a wasteful number, since it uses less digits than its factorization.

1491742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its digits is 2016, while the sum is 28.

The square root of 1491742 is about 1221.3689041399. The cubic root of 1491742 is about 114.2609697917.

It can be divided in two parts, 149 and 1742, that added together give a triangular number (1891 = T₆₁).

The spelling of 1491742 in words is "one million, four hundred ninety-one thousand, seven hundred forty-two".