840150 has 36 divisors (see below), whose sum is σ = 2258412. Its totient is φ = 223920.

The previous prime is 840149. The next prime is 840163. The reversal of 840150 is 51048.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

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 17 ways as a sum of consecutive naturals, for example, 484 + ... + 1383.

2⁸⁴⁰¹⁵⁰ is an apocalyptic number.

840150 is an abundant number, since it is smaller than the sum of its proper divisors (1418262).

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

840150 is a wasteful number, since it uses less digits than its factorization.

840150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 840150 is about 916.5969670471. The cubic root of 840150 is about 94.3594955744.

Adding to 840150 its reverse (51048), we get a palindrome (891198).

It can be divided in two parts, 840 and 150, that added together give a triangular number (990 = T₄₄).

The spelling of 840150 in words is "eight hundred forty thousand, one hundred fifty".