1210523040 has 144 divisors (see below), whose sum is σ = 4198934376. Its totient is φ = 317491200.

The previous prime is 1210522931. The next prime is 1210523089. The reversal of 1210523040 is 403250121.

It can be written as a sum of positive squares in 4 ways, for example, as 672468624 + 538054416 = 25932^2 + 23196^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80950 + ... + 94730.

Almost surely, 2^1210523040 is an apocalyptic number.

1210523040 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 1210523040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2099467188).

1210523040 is an abundant number, since it is smaller than the sum of its proper divisors (2988411336).

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

1210523040 is a wasteful number, since it uses less digits than its factorization.

1210523040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13863 (or 13852 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1210523040 is about 34792.5716209653. The cubic root of 1210523040 is about 1065.7557553080.

Adding to 1210523040 its reverse (403250121), we get a palindrome (1613773161).

The spelling of 1210523040 in words is "one billion, two hundred ten million, five hundred twenty-three thousand, forty".