1461240 has 160 divisors (see below), whose sum is σ = 5488560. Its totient is φ = 345600.

The previous prime is 1461211. The next prime is 1461283. The reversal of 1461240 is 421641.

1461240 is a `hidden beast` number, since 14 + 612 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35620 + ... + 35660.

2^1461240 is an apocalyptic number.

1461240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1461240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2744280).

1461240 is an abundant number, since it is smaller than the sum of its proper divisors (4027320).

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

1461240 is a wasteful number, since it uses less digits than its factorization.

1461240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1461240 is about 1208.8176041074. The cubic root of 1461240 is about 113.4768270856.

Adding to 1461240 its reverse (421641), we get a palindrome (1882881).

The spelling of 1461240 in words is "one million, four hundred sixty-one thousand, two hundred forty".