1850121 has 40 divisors (see below), whose sum is σ = 3415104. Its totient is φ = 972000.

The previous prime is 1850119. The next prime is 1850129. The reversal of 1850121 is 1210581.

It is not a de Polignac number, because 1850121 - 2¹ = 1850119 is a prime.

It is an alternating number because its digits alternate between odd and even.

1850121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1850094 and 1850103.

It is not an unprimeable number, because it can be changed into a prime (1850129) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7246 + ... + 7496.

2^1850121 is an apocalyptic number.

It is an amenable number.

1850121 is a deficient number, since it is larger than the sum of its proper divisors (1564983).

1850121 is a wasteful number, since it uses less digits than its factorization.

1850121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1850121 is about 1360.1915306309. The cubic root of 1850121 is about 122.7627789523.

It can be divided in two parts, 18501 and 21, that multiplied together give a triangular number (388521 = T₈₈₁).

The spelling of 1850121 in words is "one million, eight hundred fifty thousand, one hundred twenty-one".