1670742 has 24 divisors (see below), whose sum is σ = 3659760. Its totient is φ = 550800.

The previous prime is 1670741. The next prime is 1670761. The reversal of 1670742 is 2470761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1359 + ... + 2277.

It is an arithmetic number, because the mean of its divisors is an integer number (152490).

2^1670742 is an apocalyptic number.

1670742 is an abundant number, since it is smaller than the sum of its proper divisors (1989018).

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

1670742 is a wasteful number, since it uses less digits than its factorization.

1670742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1670742 is about 1292.5718548692. The cubic root of 1670742 is about 118.6596683300.

The spelling of 1670742 in words is "one million, six hundred seventy thousand, seven hundred forty-two".