1161420 has 48 divisors (see below), whose sum is σ = 3504480. Its totient is φ = 285696.

The previous prime is 1161403. The next prime is 1161437. The reversal of 1161420 is 241611.

It is an interprime number because it is at equal distance from previous prime (1161403) and next prime (1161437).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1161420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (73010).

2^1161420 is an apocalyptic number.

1161420 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 1161420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752240).

1161420 is an abundant number, since it is smaller than the sum of its proper divisors (2343060).

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

1161420 is a wasteful number, since it uses less digits than its factorization.

1161420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1161420 is about 1077.6919782572. The cubic root of 1161420 is about 105.1146140751.

The spelling of 1161420 in words is "one million, one hundred sixty-one thousand, four hundred twenty".