1340858 has 16 divisors (see below), whose sum is σ = 2154600. Its totient is φ = 623616.

The previous prime is 1340837. The next prime is 1340861. The reversal of 1340858 is 8580431.

It can be written as a sum of positive squares in 4 ways, for example, as 1087849 + 253009 = 1043^2 + 503^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340858.

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, 3668 + ... + 4016.

2^1340858 is an apocalyptic number.

1340858 is a deficient number, since it is larger than the sum of its proper divisors (813742).

1340858 is a wasteful number, since it uses less digits than its factorization.

1340858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1340858 is about 1157.9542305290. The cubic root of 1340858 is about 110.2709025349.

The spelling of 1340858 in words is "one million, three hundred forty thousand, eight hundred fifty-eight".