1051380 has 120 divisors (see below), whose sum is σ = 3659040. Its totient is φ = 250560.

The previous prime is 1051373. The next prime is 1051397. The reversal of 1051380 is 831501.

It is a happy number.

1051380 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×1051380² = 2210799808800, which contains 22 as substring.

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, 17791 + ... + 17849.

It is an arithmetic number, because the mean of its divisors is an integer number (30492).

2^1051380 is an apocalyptic number.

1051380 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 1051380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829520).

1051380 is an abundant number, since it is smaller than the sum of its proper divisors (2607660).

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

1051380 is a wasteful number, since it uses less digits than its factorization.

1051380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1051380 is about 1025.3682265411. The cubic root of 1051380 is about 101.6841440287.

Adding to 1051380 its reverse (831501), we get a palindrome (1882881).

It can be divided in two parts, 1051 and 380, that added together give a triangular number (1431 = T₅₃).

The spelling of 1051380 in words is "one million, fifty-one thousand, three hundred eighty".